Home / 3,187.49-4,399.01-1,861.62

Finding the Fourth Proportional to 3,187.49, 4,399.01 and 1,861.62

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Solution

The fourth proportional to 3,187.49, 4,399.01 and 1,861.62 is: 2,569.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,187.49 : 4,399.01 = 1,861.62 : x
  2. Step 2: Convert to fraction form
    3,187.49/4,399.01 = 1,861.62/x
  3. Step 3: Cross multiply
    3,187.49x = 4,399.01 × 1,861.62
  4. Step 4: Simplify right side
    3,187.49x = 8,189,262.68
  5. Step 5: Solve for x
    x = 8,189,262.68/3,187.49
  6. Step 6: Final answer
    x = 2,569.19

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1.5x scale

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.