Home / 3,930.53-5,425.89-2,671.58

Finding the Fourth Proportional to 3,930.53, 5,425.89 and 2,671.58

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Solution

The fourth proportional to 3,930.53, 5,425.89 and 2,671.58 is: 3,687.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,930.53 : 5,425.89 = 2,671.58 : x
  2. Step 2: Convert to fraction form
    3,930.53/5,425.89 = 2,671.58/x
  3. Step 3: Cross multiply
    3,930.53x = 5,425.89 × 2,671.58
  4. Step 4: Simplify right side
    3,930.53x = 14,495,702.75
  5. Step 5: Solve for x
    x = 14,495,702.75/3,930.53
  6. Step 6: Final answer
    x = 3,687.98

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1.5x scale

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.