Home / 1,711.81-2,568.34-724.87

Finding the Fourth Proportional to 1,711.81, 2,568.34 and 724.87

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Solution

The fourth proportional to 1,711.81, 2,568.34 and 724.87 is: 1,087.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,711.81 : 2,568.34 = 724.87 : x
  2. Step 2: Convert to fraction form
    1,711.81/2,568.34 = 724.87/x
  3. Step 3: Cross multiply
    1,711.81x = 2,568.34 × 724.87
  4. Step 4: Simplify right side
    1,711.81x = 1,861,712.62
  5. Step 5: Solve for x
    x = 1,861,712.62/1,711.81
  6. Step 6: Final answer
    x = 1,087.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.