Home / 7,769.28-11,655.76-3,387.52

Finding the Fourth Proportional to 7,769.28, 11,655.76 and 3,387.52

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Solution

The fourth proportional to 7,769.28, 11,655.76 and 3,387.52 is: 5,082.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,769.28 : 11,655.76 = 3,387.52 : x
  2. Step 2: Convert to fraction form
    7,769.28/11,655.76 = 3,387.52/x
  3. Step 3: Cross multiply
    7,769.28x = 11,655.76 × 3,387.52
  4. Step 4: Simplify right side
    7,769.28x = 39,484,120.12
  5. Step 5: Solve for x
    x = 39,484,120.12/7,769.28
  6. Step 6: Final answer
    x = 5,082.08

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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.