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Finding the Fourth Proportional to 8,704.92, 12,008.34 and 5,557.80

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Solution

The fourth proportional to 8,704.92, 12,008.34 and 5,557.80 is: 7,666.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,704.92 : 12,008.34 = 5,557.80 : x
  2. Step 2: Convert to fraction form
    8,704.92/12,008.34 = 5,557.80/x
  3. Step 3: Cross multiply
    8,704.92x = 12,008.34 × 5,557.80
  4. Step 4: Simplify right side
    8,704.92x = 66,739,952.05
  5. Step 5: Solve for x
    x = 66,739,952.05/8,704.92
  6. Step 6: Final answer
    x = 7,666.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.