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Finding the Fourth Proportional to 8,275.28, 12,412.92 and 5,821.08

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Solution

The fourth proportional to 8,275.28, 12,412.92 and 5,821.08 is: 8,731.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,275.28 : 12,412.92 = 5,821.08 : x
  2. Step 2: Convert to fraction form
    8,275.28/12,412.92 = 5,821.08/x
  3. Step 3: Cross multiply
    8,275.28x = 12,412.92 × 5,821.08
  4. Step 4: Simplify right side
    8,275.28x = 72,256,585.80
  5. Step 5: Solve for x
    x = 72,256,585.80/8,275.28
  6. Step 6: Final answer
    x = 8,731.62

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Similar ratio
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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.