Home / 6,515.28-9,773.10-2,815.20

Finding the Fourth Proportional to 6,515.28, 9,773.10 and 2,815.20

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Solution

The fourth proportional to 6,515.28, 9,773.10 and 2,815.20 is: 4,222.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,515.28 : 9,773.10 = 2,815.20 : x
  2. Step 2: Convert to fraction form
    6,515.28/9,773.10 = 2,815.20/x
  3. Step 3: Cross multiply
    6,515.28x = 9,773.10 × 2,815.20
  4. Step 4: Simplify right side
    6,515.28x = 27,513,231.12
  5. Step 5: Solve for x
    x = 27,513,231.12/6,515.28
  6. Step 6: Final answer
    x = 4,222.88

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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.