Home / 3,126.28-4,686.12-1,251.46

Finding the Fourth Proportional to 3,126.28, 4,686.12 and 1,251.46

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Solution

The fourth proportional to 3,126.28, 4,686.12 and 1,251.46 is: 1,875.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,126.28 : 4,686.12 = 1,251.46 : x
  2. Step 2: Convert to fraction form
    3,126.28/4,686.12 = 1,251.46/x
  3. Step 3: Cross multiply
    3,126.28x = 4,686.12 × 1,251.46
  4. Step 4: Simplify right side
    3,126.28x = 5,864,491.74
  5. Step 5: Solve for x
    x = 5,864,491.74/3,126.28
  6. Step 6: Final answer
    x = 1,875.87

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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.