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Finding the Fourth Proportional to 7,659.28, 11,489.95 and 3,500.57

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Solution

The fourth proportional to 7,659.28, 11,489.95 and 3,500.57 is: 5,251.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,659.28 : 11,489.95 = 3,500.57 : x
  2. Step 2: Convert to fraction form
    7,659.28/11,489.95 = 3,500.57/x
  3. Step 3: Cross multiply
    7,659.28x = 11,489.95 × 3,500.57
  4. Step 4: Simplify right side
    7,659.28x = 40,221,342.74
  5. Step 5: Solve for x
    x = 40,221,342.74/7,659.28
  6. Step 6: Final answer
    x = 5,251.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.