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Finding the Fourth Proportional to 8,775.90, 12,134.07 and 7,668.73

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Solution

The fourth proportional to 8,775.90, 12,134.07 and 7,668.73 is: 10,603.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,775.90 : 12,134.07 = 7,668.73 : x
  2. Step 2: Convert to fraction form
    8,775.90/12,134.07 = 7,668.73/x
  3. Step 3: Cross multiply
    8,775.90x = 12,134.07 × 7,668.73
  4. Step 4: Simplify right side
    8,775.90x = 93,052,921.80
  5. Step 5: Solve for x
    x = 93,052,921.80/8,775.90
  6. Step 6: Final answer
    x = 10,603.23

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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.