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Finding the Fourth Proportional to 8,543.14, 12,814.60 and 7,079.22

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Solution

The fourth proportional to 8,543.14, 12,814.60 and 7,079.22 is: 10,618.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,543.14 : 12,814.60 = 7,079.22 : x
  2. Step 2: Convert to fraction form
    8,543.14/12,814.60 = 7,079.22/x
  3. Step 3: Cross multiply
    8,543.14x = 12,814.60 × 7,079.22
  4. Step 4: Simplify right side
    8,543.14x = 90,717,372.61
  5. Step 5: Solve for x
    x = 90,717,372.61/8,543.14
  6. Step 6: Final answer
    x = 10,618.74

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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.