Home / 2,517.98-3,778.05-1,420.70

Finding the Fourth Proportional to 2,517.98, 3,778.05 and 1,420.70

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Solution

The fourth proportional to 2,517.98, 3,778.05 and 1,420.70 is: 2,131.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,517.98 : 3,778.05 = 1,420.70 : x
  2. Step 2: Convert to fraction form
    2,517.98/3,778.05 = 1,420.70/x
  3. Step 3: Cross multiply
    2,517.98x = 3,778.05 × 1,420.70
  4. Step 4: Simplify right side
    2,517.98x = 5,367,475.64
  5. Step 5: Solve for x
    x = 5,367,475.64/2,517.98
  6. Step 6: Final answer
    x = 2,131.66

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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.