Home / 5,486.72-7,572.11-3,129.03

Finding the Fourth Proportional to 5,486.72, 7,572.11 and 3,129.03

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Solution

The fourth proportional to 5,486.72, 7,572.11 and 3,129.03 is: 4,318.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,486.72 : 7,572.11 = 3,129.03 : x
  2. Step 2: Convert to fraction form
    5,486.72/7,572.11 = 3,129.03/x
  3. Step 3: Cross multiply
    5,486.72x = 7,572.11 × 3,129.03
  4. Step 4: Simplify right side
    5,486.72x = 23,693,343.71
  5. Step 5: Solve for x
    x = 23,693,343.71/5,486.72
  6. Step 6: Final answer
    x = 4,318.31

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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.