Home / 10,379.28-15,576.96-3,809.76

Finding the Fourth Proportional to 10,379.28, 15,576.96 and 3,809.76

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Solution

The fourth proportional to 10,379.28, 15,576.96 and 3,809.76 is: 5,717.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,379.28 : 15,576.96 = 3,809.76 : x
  2. Step 2: Convert to fraction form
    10,379.28/15,576.96 = 3,809.76/x
  3. Step 3: Cross multiply
    10,379.28x = 15,576.96 × 3,809.76
  4. Step 4: Simplify right side
    10,379.28x = 59,344,479.13
  5. Step 5: Solve for x
    x = 59,344,479.13/10,379.28
  6. Step 6: Final answer
    x = 5,717.59

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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.