Home / 5,708.10-8,561.28-1,812

Finding the Fourth Proportional to 5,708.10, 8,561.28 and 1,812

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Solution

The fourth proportional to 5,708.10, 8,561.28 and 1,812 is: 2,717.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,708.10 : 8,561.28 = 1,812 : x
  2. Step 2: Convert to fraction form
    5,708.10/8,561.28 = 1,812/x
  3. Step 3: Cross multiply
    5,708.10x = 8,561.28 × 1,812
  4. Step 4: Simplify right side
    5,708.10x = 15,513,039.36
  5. Step 5: Solve for x
    x = 15,513,039.36/5,708.10
  6. Step 6: Final answer
    x = 2,717.72

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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.