Home / 5,515.92-8,275.20-2,918.28

Finding the Fourth Proportional to 5,515.92, 8,275.20 and 2,918.28

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Solution

The fourth proportional to 5,515.92, 8,275.20 and 2,918.28 is: 4,378.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,515.92 : 8,275.20 = 2,918.28 : x
  2. Step 2: Convert to fraction form
    5,515.92/8,275.20 = 2,918.28/x
  3. Step 3: Cross multiply
    5,515.92x = 8,275.20 × 2,918.28
  4. Step 4: Simplify right side
    5,515.92x = 24,149,350.66
  5. Step 5: Solve for x
    x = 24,149,350.66/5,515.92
  6. Step 6: Final answer
    x = 4,378.12

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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.