Home / 3,931.54-5,422.75-2,671.85

Finding the Fourth Proportional to 3,931.54, 5,422.75 and 2,671.85

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Solution

The fourth proportional to 3,931.54, 5,422.75 and 2,671.85 is: 3,685.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,931.54 : 5,422.75 = 2,671.85 : x
  2. Step 2: Convert to fraction form
    3,931.54/5,422.75 = 2,671.85/x
  3. Step 3: Cross multiply
    3,931.54x = 5,422.75 × 2,671.85
  4. Step 4: Simplify right side
    3,931.54x = 14,488,781.46
  5. Step 5: Solve for x
    x = 14,488,781.46/3,931.54
  6. Step 6: Final answer
    x = 3,685.27

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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.