Home / 5,635.28-7,777.92-3,278.78

Finding the Fourth Proportional to 5,635.28, 7,777.92 and 3,278.78

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Solution

The fourth proportional to 5,635.28, 7,777.92 and 3,278.78 is: 4,525.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,635.28 : 7,777.92 = 3,278.78 : x
  2. Step 2: Convert to fraction form
    5,635.28/7,777.92 = 3,278.78/x
  3. Step 3: Cross multiply
    5,635.28x = 7,777.92 × 3,278.78
  4. Step 4: Simplify right side
    5,635.28x = 25,502,088.54
  5. Step 5: Solve for x
    x = 25,502,088.54/5,635.28
  6. Step 6: Final answer
    x = 4,525.43

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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.