Home / 2,463.78-3,689.79-1,421.61

Finding the Fourth Proportional to 2,463.78, 3,689.79 and 1,421.61

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Solution

The fourth proportional to 2,463.78, 3,689.79 and 1,421.61 is: 2,129.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,463.78 : 3,689.79 = 1,421.61 : x
  2. Step 2: Convert to fraction form
    2,463.78/3,689.79 = 1,421.61/x
  3. Step 3: Cross multiply
    2,463.78x = 3,689.79 × 1,421.61
  4. Step 4: Simplify right side
    2,463.78x = 5,245,442.36
  5. Step 5: Solve for x
    x = 5,245,442.36/2,463.78
  6. Step 6: Final answer
    x = 2,129.02

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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.