Home / 8,278.68-11,418.80-5,621.48

Finding the Fourth Proportional to 8,278.68, 11,418.80 and 5,621.48

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Solution

The fourth proportional to 8,278.68, 11,418.80 and 5,621.48 is: 7,753.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,278.68 : 11,418.80 = 5,621.48 : x
  2. Step 2: Convert to fraction form
    8,278.68/11,418.80 = 5,621.48/x
  3. Step 3: Cross multiply
    8,278.68x = 11,418.80 × 5,621.48
  4. Step 4: Simplify right side
    8,278.68x = 64,190,470.62
  5. Step 5: Solve for x
    x = 64,190,470.62/8,278.68
  6. Step 6: Final answer
    x = 7,753.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.