Home / 3,129.29-4,317.66-1,949.52

Finding the Fourth Proportional to 3,129.29, 4,317.66 and 1,949.52

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Solution

The fourth proportional to 3,129.29, 4,317.66 and 1,949.52 is: 2,689.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,129.29 : 4,317.66 = 1,949.52 : x
  2. Step 2: Convert to fraction form
    3,129.29/4,317.66 = 1,949.52/x
  3. Step 3: Cross multiply
    3,129.29x = 4,317.66 × 1,949.52
  4. Step 4: Simplify right side
    3,129.29x = 8,417,364.52
  5. Step 5: Solve for x
    x = 8,417,364.52/3,129.29
  6. Step 6: Final answer
    x = 2,689.87

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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.