Home / 2,279.29-3,143.85-1,395.53

Finding the Fourth Proportional to 2,279.29, 3,143.85 and 1,395.53

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Solution

The fourth proportional to 2,279.29, 3,143.85 and 1,395.53 is: 1,924.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,279.29 : 3,143.85 = 1,395.53 : x
  2. Step 2: Convert to fraction form
    2,279.29/3,143.85 = 1,395.53/x
  3. Step 3: Cross multiply
    2,279.29x = 3,143.85 × 1,395.53
  4. Step 4: Simplify right side
    2,279.29x = 4,387,324.76
  5. Step 5: Solve for x
    x = 4,387,324.76/2,279.29
  6. Step 6: Final answer
    x = 1,924.87

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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.