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Finding the Fourth Proportional to 7,711.70, 11,552.04 and 3,545.89

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Solution

The fourth proportional to 7,711.70, 11,552.04 and 3,545.89 is: 5,311.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,711.70 : 11,552.04 = 3,545.89 : x
  2. Step 2: Convert to fraction form
    7,711.70/11,552.04 = 3,545.89/x
  3. Step 3: Cross multiply
    7,711.70x = 11,552.04 × 3,545.89
  4. Step 4: Simplify right side
    7,711.70x = 40,962,234.24
  5. Step 5: Solve for x
    x = 40,962,234.24/7,711.70
  6. Step 6: Final answer
    x = 5,311.70

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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.