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Finding the Fourth Proportional to 8,616.69, 12,915.48 and 4,456.92

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Solution

The fourth proportional to 8,616.69, 12,915.48 and 4,456.92 is: 6,680.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,616.69 : 12,915.48 = 4,456.92 : x
  2. Step 2: Convert to fraction form
    8,616.69/12,915.48 = 4,456.92/x
  3. Step 3: Cross multiply
    8,616.69x = 12,915.48 × 4,456.92
  4. Step 4: Simplify right side
    8,616.69x = 57,563,261.12
  5. Step 5: Solve for x
    x = 57,563,261.12/8,616.69
  6. Step 6: Final answer
    x = 6,680.44

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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.