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Finding the Fourth Proportional to 8,949.69, 12,339.54 and 7,350.75

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Solution

The fourth proportional to 8,949.69, 12,339.54 and 7,350.75 is: 10,134.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,949.69 : 12,339.54 = 7,350.75 : x
  2. Step 2: Convert to fraction form
    8,949.69/12,339.54 = 7,350.75/x
  3. Step 3: Cross multiply
    8,949.69x = 12,339.54 × 7,350.75
  4. Step 4: Simplify right side
    8,949.69x = 90,704,873.66
  5. Step 5: Solve for x
    x = 90,704,873.66/8,949.69
  6. Step 6: Final answer
    x = 10,134.97

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Half scale
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Double scale
Find fourth proportional to 8,950.69, 12,340.92 and 7,351.75
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.