Home / 7,221.38-10,812.08-3,703.80

Finding the Fourth Proportional to 7,221.38, 10,812.08 and 3,703.80

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Solution

The fourth proportional to 7,221.38, 10,812.08 and 3,703.80 is: 5,545.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,221.38 : 10,812.08 = 3,703.80 : x
  2. Step 2: Convert to fraction form
    7,221.38/10,812.08 = 3,703.80/x
  3. Step 3: Cross multiply
    7,221.38x = 10,812.08 × 3,703.80
  4. Step 4: Simplify right side
    7,221.38x = 40,045,781.90
  5. Step 5: Solve for x
    x = 40,045,781.90/7,221.38
  6. Step 6: Final answer
    x = 5,545.45

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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.