Home / 3,720.91-5,572.56-3,231.34

Finding the Fourth Proportional to 3,720.91, 5,572.56 and 3,231.34

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Solution

The fourth proportional to 3,720.91, 5,572.56 and 3,231.34 is: 4,839.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,720.91 : 5,572.56 = 3,231.34 : x
  2. Step 2: Convert to fraction form
    3,720.91/5,572.56 = 3,231.34/x
  3. Step 3: Cross multiply
    3,720.91x = 5,572.56 × 3,231.34
  4. Step 4: Simplify right side
    3,720.91x = 18,006,822.10
  5. Step 5: Solve for x
    x = 18,006,822.10/3,720.91
  6. Step 6: Final answer
    x = 4,839.36

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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.