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Finding the Fourth Proportional to 7,489.60, 10,335.28 and 4,345.28

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Solution

The fourth proportional to 7,489.60, 10,335.28 and 4,345.28 is: 5,996.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,489.60 : 10,335.28 = 4,345.28 : x
  2. Step 2: Convert to fraction form
    7,489.60/10,335.28 = 4,345.28/x
  3. Step 3: Cross multiply
    7,489.60x = 10,335.28 × 4,345.28
  4. Step 4: Simplify right side
    7,489.60x = 44,909,685.48
  5. Step 5: Solve for x
    x = 44,909,685.48/7,489.60
  6. Step 6: Final answer
    x = 5,996.27

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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.