Home / 3,177.24-4,372.28-2,931

Finding the Fourth Proportional to 3,177.24, 4,372.28 and 2,931

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Solution

The fourth proportional to 3,177.24, 4,372.28 and 2,931 is: 4,033.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,177.24 : 4,372.28 = 2,931 : x
  2. Step 2: Convert to fraction form
    3,177.24/4,372.28 = 2,931/x
  3. Step 3: Cross multiply
    3,177.24x = 4,372.28 × 2,931
  4. Step 4: Simplify right side
    3,177.24x = 12,815,152.68
  5. Step 5: Solve for x
    x = 12,815,152.68/3,177.24
  6. Step 6: Final answer
    x = 4,033.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.