Home / 2,591.40-3,877.92-1,617.96

Finding the Fourth Proportional to 2,591.40, 3,877.92 and 1,617.96

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Solution

The fourth proportional to 2,591.40, 3,877.92 and 1,617.96 is: 2,421.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,591.40 : 3,877.92 = 1,617.96 : x
  2. Step 2: Convert to fraction form
    2,591.40/3,877.92 = 1,617.96/x
  3. Step 3: Cross multiply
    2,591.40x = 3,877.92 × 1,617.96
  4. Step 4: Simplify right side
    2,591.40x = 6,274,319.44
  5. Step 5: Solve for x
    x = 6,274,319.44/2,591.40
  6. Step 6: Final answer
    x = 2,421.21

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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.