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Finding the Fourth Proportional to 8,704.74, 12,012.30 and 5,167.92

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Solution

The fourth proportional to 8,704.74, 12,012.30 and 5,167.92 is: 7,131.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,704.74 : 12,012.30 = 5,167.92 : x
  2. Step 2: Convert to fraction form
    8,704.74/12,012.30 = 5,167.92/x
  3. Step 3: Cross multiply
    8,704.74x = 12,012.30 × 5,167.92
  4. Step 4: Simplify right side
    8,704.74x = 62,078,605.42
  5. Step 5: Solve for x
    x = 62,078,605.42/8,704.74
  6. Step 6: Final answer
    x = 7,131.59

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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.