Home / 5,145.30-7,717.92-1,249.74

Finding the Fourth Proportional to 5,145.30, 7,717.92 and 1,249.74

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Solution

The fourth proportional to 5,145.30, 7,717.92 and 1,249.74 is: 1,874.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,145.30 : 7,717.92 = 1,249.74 : x
  2. Step 2: Convert to fraction form
    5,145.30/7,717.92 = 1,249.74/x
  3. Step 3: Cross multiply
    5,145.30x = 7,717.92 × 1,249.74
  4. Step 4: Simplify right side
    5,145.30x = 9,645,393.34
  5. Step 5: Solve for x
    x = 9,645,393.34/5,145.30
  6. Step 6: Final answer
    x = 1,874.60

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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.