Home / 3,187.67-4,398.89-1,861.52

Finding the Fourth Proportional to 3,187.67, 4,398.89 and 1,861.52

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Solution

The fourth proportional to 3,187.67, 4,398.89 and 1,861.52 is: 2,568.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,187.67 : 4,398.89 = 1,861.52 : x
  2. Step 2: Convert to fraction form
    3,187.67/4,398.89 = 1,861.52/x
  3. Step 3: Cross multiply
    3,187.67x = 4,398.89 × 1,861.52
  4. Step 4: Simplify right side
    3,187.67x = 8,188,590.41
  5. Step 5: Solve for x
    x = 8,188,590.41/3,187.67
  6. Step 6: Final answer
    x = 2,568.84

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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.