Home / 3,187.74-4,399.35-1,861.87

Finding the Fourth Proportional to 3,187.74, 4,399.35 and 1,861.87

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Solution

The fourth proportional to 3,187.74, 4,399.35 and 1,861.87 is: 2,569.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,187.74 : 4,399.35 = 1,861.87 : x
  2. Step 2: Convert to fraction form
    3,187.74/4,399.35 = 1,861.87/x
  3. Step 3: Cross multiply
    3,187.74x = 4,399.35 × 1,861.87
  4. Step 4: Simplify right side
    3,187.74x = 8,191,011.44
  5. Step 5: Solve for x
    x = 8,191,011.44/3,187.74
  6. Step 6: Final answer
    x = 2,569.54

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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.