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Finding the Fourth Proportional to 8,607.56, 12,911.27 and 5,685.17

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Solution

The fourth proportional to 8,607.56, 12,911.27 and 5,685.17 is: 8,527.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,607.56 : 12,911.27 = 5,685.17 : x
  2. Step 2: Convert to fraction form
    8,607.56/12,911.27 = 5,685.17/x
  3. Step 3: Cross multiply
    8,607.56x = 12,911.27 × 5,685.17
  4. Step 4: Simplify right side
    8,607.56x = 73,402,671.88
  5. Step 5: Solve for x
    x = 73,402,671.88/8,607.56
  6. Step 6: Final answer
    x = 8,527.70

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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.