Home / 10,212.26-15,319.38-3,972.78

Finding the Fourth Proportional to 10,212.26, 15,319.38 and 3,972.78

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Solution

The fourth proportional to 10,212.26, 15,319.38 and 3,972.78 is: 5,959.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,212.26 : 15,319.38 = 3,972.78 : x
  2. Step 2: Convert to fraction form
    10,212.26/15,319.38 = 3,972.78/x
  3. Step 3: Cross multiply
    10,212.26x = 15,319.38 × 3,972.78
  4. Step 4: Simplify right side
    10,212.26x = 60,860,526.48
  5. Step 5: Solve for x
    x = 60,860,526.48/10,212.26
  6. Step 6: Final answer
    x = 5,959.56

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1.5x scale

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.