Home / 2,521.64-3,778.40-1,422.74

Finding the Fourth Proportional to 2,521.64, 3,778.40 and 1,422.74

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Solution

The fourth proportional to 2,521.64, 3,778.40 and 1,422.74 is: 2,131.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,521.64 : 3,778.40 = 1,422.74 : x
  2. Step 2: Convert to fraction form
    2,521.64/3,778.40 = 1,422.74/x
  3. Step 3: Cross multiply
    2,521.64x = 3,778.40 × 1,422.74
  4. Step 4: Simplify right side
    2,521.64x = 5,375,680.82
  5. Step 5: Solve for x
    x = 5,375,680.82/2,521.64
  6. Step 6: Final answer
    x = 2,131.82

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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.