Home / 3,139.71-4,333.34-1,814.18

Finding the Fourth Proportional to 3,139.71, 4,333.34 and 1,814.18

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Solution

The fourth proportional to 3,139.71, 4,333.34 and 1,814.18 is: 2,503.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.71 : 4,333.34 = 1,814.18 : x
  2. Step 2: Convert to fraction form
    3,139.71/4,333.34 = 1,814.18/x
  3. Step 3: Cross multiply
    3,139.71x = 4,333.34 × 1,814.18
  4. Step 4: Simplify right side
    3,139.71x = 7,861,471.53
  5. Step 5: Solve for x
    x = 7,861,471.53/3,139.71
  6. Step 6: Final answer
    x = 2,503.88

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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.