Home / 2,572.38-3,847.68-2,172.06

Finding the Fourth Proportional to 2,572.38, 3,847.68 and 2,172.06

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Solution

The fourth proportional to 2,572.38, 3,847.68 and 2,172.06 is: 3,248.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,572.38 : 3,847.68 = 2,172.06 : x
  2. Step 2: Convert to fraction form
    2,572.38/3,847.68 = 2,172.06/x
  3. Step 3: Cross multiply
    2,572.38x = 3,847.68 × 2,172.06
  4. Step 4: Simplify right side
    2,572.38x = 8,357,391.82
  5. Step 5: Solve for x
    x = 8,357,391.82/2,572.38
  6. Step 6: Final answer
    x = 3,248.89

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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.