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Finding the Fourth Proportional to 8,635.55, 12,957.98 and 8,480.97

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Solution

The fourth proportional to 8,635.55, 12,957.98 and 8,480.97 is: 12,726.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,635.55 : 12,957.98 = 8,480.97 : x
  2. Step 2: Convert to fraction form
    8,635.55/12,957.98 = 8,480.97/x
  3. Step 3: Cross multiply
    8,635.55x = 12,957.98 × 8,480.97
  4. Step 4: Simplify right side
    8,635.55x = 109,896,197.24
  5. Step 5: Solve for x
    x = 109,896,197.24/8,635.55
  6. Step 6: Final answer
    x = 12,726.03

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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.