Home / 2,278.91-3,424.53-1,239.68

Finding the Fourth Proportional to 2,278.91, 3,424.53 and 1,239.68

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Solution

The fourth proportional to 2,278.91, 3,424.53 and 1,239.68 is: 1,862.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,278.91 : 3,424.53 = 1,239.68 : x
  2. Step 2: Convert to fraction form
    2,278.91/3,424.53 = 1,239.68/x
  3. Step 3: Cross multiply
    2,278.91x = 3,424.53 × 1,239.68
  4. Step 4: Simplify right side
    2,278.91x = 4,245,304.23
  5. Step 5: Solve for x
    x = 4,245,304.23/2,278.91
  6. Step 6: Final answer
    x = 1,862.87

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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.