Home / 2,148.75-3,224.12-849.87

Finding the Fourth Proportional to 2,148.75, 3,224.12 and 849.87

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Solution

The fourth proportional to 2,148.75, 3,224.12 and 849.87 is: 1,275.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,148.75 : 3,224.12 = 849.87 : x
  2. Step 2: Convert to fraction form
    2,148.75/3,224.12 = 849.87/x
  3. Step 3: Cross multiply
    2,148.75x = 3,224.12 × 849.87
  4. Step 4: Simplify right side
    2,148.75x = 2,740,078.62
  5. Step 5: Solve for x
    x = 2,740,078.62/2,148.75
  6. Step 6: Final answer
    x = 1,275.20

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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.