Home / 10,340.42-15,512.06-3,318.78

Finding the Fourth Proportional to 10,340.42, 15,512.06 and 3,318.78

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Solution

The fourth proportional to 10,340.42, 15,512.06 and 3,318.78 is: 4,978.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,340.42 : 15,512.06 = 3,318.78 : x
  2. Step 2: Convert to fraction form
    10,340.42/15,512.06 = 3,318.78/x
  3. Step 3: Cross multiply
    10,340.42x = 15,512.06 × 3,318.78
  4. Step 4: Simplify right side
    10,340.42x = 51,481,114.49
  5. Step 5: Solve for x
    x = 51,481,114.49/10,340.42
  6. Step 6: Final answer
    x = 4,978.63

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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.