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Finding the Fourth Proportional to 7,539.28, 10,335.54 and 7,418.32

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Solution

The fourth proportional to 7,539.28, 10,335.54 and 7,418.32 is: 10,169.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,539.28 : 10,335.54 = 7,418.32 : x
  2. Step 2: Convert to fraction form
    7,539.28/10,335.54 = 7,418.32/x
  3. Step 3: Cross multiply
    7,539.28x = 10,335.54 × 7,418.32
  4. Step 4: Simplify right side
    7,539.28x = 76,672,343.09
  5. Step 5: Solve for x
    x = 76,672,343.09/7,539.28
  6. Step 6: Final answer
    x = 10,169.72

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Half scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.