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Finding the Fourth Proportional to 8,545.72, 12,791.84 and 5,539.72

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Solution

The fourth proportional to 8,545.72, 12,791.84 and 5,539.72 is: 8,292.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,545.72 : 12,791.84 = 5,539.72 : x
  2. Step 2: Convert to fraction form
    8,545.72/12,791.84 = 5,539.72/x
  3. Step 3: Cross multiply
    8,545.72x = 12,791.84 × 5,539.72
  4. Step 4: Simplify right side
    8,545.72x = 70,863,211.88
  5. Step 5: Solve for x
    x = 70,863,211.88/8,545.72
  6. Step 6: Final answer
    x = 8,292.25

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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.