Home / 2,587.20-3,882.60-1,857.39

Finding the Fourth Proportional to 2,587.20, 3,882.60 and 1,857.39

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Solution

The fourth proportional to 2,587.20, 3,882.60 and 1,857.39 is: 2,787.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,587.20 : 3,882.60 = 1,857.39 : x
  2. Step 2: Convert to fraction form
    2,587.20/3,882.60 = 1,857.39/x
  3. Step 3: Cross multiply
    2,587.20x = 3,882.60 × 1,857.39
  4. Step 4: Simplify right side
    2,587.20x = 7,211,502.41
  5. Step 5: Solve for x
    x = 7,211,502.41/2,587.20
  6. Step 6: Final answer
    x = 2,787.38

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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.