Home / 3,422.24-5,129.76-1,687.28

Finding the Fourth Proportional to 3,422.24, 5,129.76 and 1,687.28

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Solution

The fourth proportional to 3,422.24, 5,129.76 and 1,687.28 is: 2,529.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,422.24 : 5,129.76 = 1,687.28 : x
  2. Step 2: Convert to fraction form
    3,422.24/5,129.76 = 1,687.28/x
  3. Step 3: Cross multiply
    3,422.24x = 5,129.76 × 1,687.28
  4. Step 4: Simplify right side
    3,422.24x = 8,655,341.45
  5. Step 5: Solve for x
    x = 8,655,341.45/3,422.24
  6. Step 6: Final answer
    x = 2,529.15

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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.