Home / 3,187.71-4,398.57-1,992.15

Finding the Fourth Proportional to 3,187.71, 4,398.57 and 1,992.15

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Solution

The fourth proportional to 3,187.71, 4,398.57 and 1,992.15 is: 2,748.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,187.71 : 4,398.57 = 1,992.15 : x
  2. Step 2: Convert to fraction form
    3,187.71/4,398.57 = 1,992.15/x
  3. Step 3: Cross multiply
    3,187.71x = 4,398.57 × 1,992.15
  4. Step 4: Simplify right side
    3,187.71x = 8,762,611.23
  5. Step 5: Solve for x
    x = 8,762,611.23/3,187.71
  6. Step 6: Final answer
    x = 2,748.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.