Home / 3,702.30-5,115.87-2,761.89

Finding the Fourth Proportional to 3,702.30, 5,115.87 and 2,761.89

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Solution

The fourth proportional to 3,702.30, 5,115.87 and 2,761.89 is: 3,816.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,702.30 : 5,115.87 = 2,761.89 : x
  2. Step 2: Convert to fraction form
    3,702.30/5,115.87 = 2,761.89/x
  3. Step 3: Cross multiply
    3,702.30x = 5,115.87 × 2,761.89
  4. Step 4: Simplify right side
    3,702.30x = 14,129,470.19
  5. Step 5: Solve for x
    x = 14,129,470.19/3,702.30
  6. Step 6: Final answer
    x = 3,816.40

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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.