Home / 3,188.28-4,400.18-1,791

Finding the Fourth Proportional to 3,188.28, 4,400.18 and 1,791

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Solution

The fourth proportional to 3,188.28, 4,400.18 and 1,791 is: 2,471.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,188.28 : 4,400.18 = 1,791 : x
  2. Step 2: Convert to fraction form
    3,188.28/4,400.18 = 1,791/x
  3. Step 3: Cross multiply
    3,188.28x = 4,400.18 × 1,791
  4. Step 4: Simplify right side
    3,188.28x = 7,880,722.38
  5. Step 5: Solve for x
    x = 7,880,722.38/3,188.28
  6. Step 6: Final answer
    x = 2,471.78

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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.