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Finding the Fourth Proportional to 8,659.81, 12,987.84 and 2,737.17

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Solution

The fourth proportional to 8,659.81, 12,987.84 and 2,737.17 is: 4,105.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,659.81 : 12,987.84 = 2,737.17 : x
  2. Step 2: Convert to fraction form
    8,659.81/12,987.84 = 2,737.17/x
  3. Step 3: Cross multiply
    8,659.81x = 12,987.84 × 2,737.17
  4. Step 4: Simplify right side
    8,659.81x = 35,549,926.01
  5. Step 5: Solve for x
    x = 35,549,926.01/8,659.81
  6. Step 6: Final answer
    x = 4,105.16

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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.