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Finding the Fourth Proportional to 7,242.87, 10,866.60 and 3,545.49

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Solution

The fourth proportional to 7,242.87, 10,866.60 and 3,545.49 is: 5,319.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,242.87 : 10,866.60 = 3,545.49 : x
  2. Step 2: Convert to fraction form
    7,242.87/10,866.60 = 3,545.49/x
  3. Step 3: Cross multiply
    7,242.87x = 10,866.60 × 3,545.49
  4. Step 4: Simplify right side
    7,242.87x = 38,527,421.63
  5. Step 5: Solve for x
    x = 38,527,421.63/7,242.87
  6. Step 6: Final answer
    x = 5,319.36

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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.