Home / 2,619.18-3,925.26-1,387.44

Finding the Fourth Proportional to 2,619.18, 3,925.26 and 1,387.44

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Solution

The fourth proportional to 2,619.18, 3,925.26 and 1,387.44 is: 2,079.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,619.18 : 3,925.26 = 1,387.44 : x
  2. Step 2: Convert to fraction form
    2,619.18/3,925.26 = 1,387.44/x
  3. Step 3: Cross multiply
    2,619.18x = 3,925.26 × 1,387.44
  4. Step 4: Simplify right side
    2,619.18x = 5,446,062.73
  5. Step 5: Solve for x
    x = 5,446,062.73/2,619.18
  6. Step 6: Final answer
    x = 2,079.30

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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.