Home / 5,231.68-7,221.90-3,740.20

Finding the Fourth Proportional to 5,231.68, 7,221.90 and 3,740.20

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Solution

The fourth proportional to 5,231.68, 7,221.90 and 3,740.20 is: 5,163.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,231.68 : 7,221.90 = 3,740.20 : x
  2. Step 2: Convert to fraction form
    5,231.68/7,221.90 = 3,740.20/x
  3. Step 3: Cross multiply
    5,231.68x = 7,221.90 × 3,740.20
  4. Step 4: Simplify right side
    5,231.68x = 27,011,350.38
  5. Step 5: Solve for x
    x = 27,011,350.38/5,231.68
  6. Step 6: Final answer
    x = 5,163.04

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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.