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Finding the Fourth Proportional to 7,489.80, 10,335.42 and 4,132.08

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Solution

The fourth proportional to 7,489.80, 10,335.42 and 4,132.08 is: 5,701.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,489.80 : 10,335.42 = 4,132.08 : x
  2. Step 2: Convert to fraction form
    7,489.80/10,335.42 = 4,132.08/x
  3. Step 3: Cross multiply
    7,489.80x = 10,335.42 × 4,132.08
  4. Step 4: Simplify right side
    7,489.80x = 42,706,782.27
  5. Step 5: Solve for x
    x = 42,706,782.27/7,489.80
  6. Step 6: Final answer
    x = 5,701.99

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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.