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Finding the Fourth Proportional to 8,442.38, 11,642.90 and 7,030.73

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Solution

The fourth proportional to 8,442.38, 11,642.90 and 7,030.73 is: 9,696.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,442.38 : 11,642.90 = 7,030.73 : x
  2. Step 2: Convert to fraction form
    8,442.38/11,642.90 = 7,030.73/x
  3. Step 3: Cross multiply
    8,442.38x = 11,642.90 × 7,030.73
  4. Step 4: Simplify right side
    8,442.38x = 81,857,992.95
  5. Step 5: Solve for x
    x = 81,857,992.95/8,442.38
  6. Step 6: Final answer
    x = 9,696.09

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Find fourth proportional to 4,221.19, 5,821.45 and 3,515.36
Half scale
Find fourth proportional to 16,884.75, 23,285.79 and 14,061.45
Double scale
Find fourth proportional to 8,443.38, 11,644.27 and 7,031.73
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.