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Finding the Fourth Proportional to 8,487.60, 12,726.27 and 3,554.70

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Solution

The fourth proportional to 8,487.60, 12,726.27 and 3,554.70 is: 5,329.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,487.60 : 12,726.27 = 3,554.70 : x
  2. Step 2: Convert to fraction form
    8,487.60/12,726.27 = 3,554.70/x
  3. Step 3: Cross multiply
    8,487.60x = 12,726.27 × 3,554.70
  4. Step 4: Simplify right side
    8,487.60x = 45,238,071.97
  5. Step 5: Solve for x
    x = 45,238,071.97/8,487.60
  6. Step 6: Final answer
    x = 5,329.90

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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.