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Finding the Fourth Proportional to 8,642.16, 12,963.24 and 5,738.88

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Solution

The fourth proportional to 8,642.16, 12,963.24 and 5,738.88 is: 8,608.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,642.16 : 12,963.24 = 5,738.88 : x
  2. Step 2: Convert to fraction form
    8,642.16/12,963.24 = 5,738.88/x
  3. Step 3: Cross multiply
    8,642.16x = 12,963.24 × 5,738.88
  4. Step 4: Simplify right side
    8,642.16x = 74,394,478.77
  5. Step 5: Solve for x
    x = 74,394,478.77/8,642.16
  6. Step 6: Final answer
    x = 8,608.32

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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.