Home / 3,126.92-4,686.32-1,275.91

Finding the Fourth Proportional to 3,126.92, 4,686.32 and 1,275.91

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Solution

The fourth proportional to 3,126.92, 4,686.32 and 1,275.91 is: 1,912.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,126.92 : 4,686.32 = 1,275.91 : x
  2. Step 2: Convert to fraction form
    3,126.92/4,686.32 = 1,275.91/x
  3. Step 3: Cross multiply
    3,126.92x = 4,686.32 × 1,275.91
  4. Step 4: Simplify right side
    3,126.92x = 5,979,314.03
  5. Step 5: Solve for x
    x = 5,979,314.03/3,126.92
  6. Step 6: Final answer
    x = 1,912.21

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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.