Home / 3,047.82-4,549.68-2,678.78

Finding the Fourth Proportional to 3,047.82, 4,549.68 and 2,678.78

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Solution

The fourth proportional to 3,047.82, 4,549.68 and 2,678.78 is: 3,998.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,047.82 : 4,549.68 = 2,678.78 : x
  2. Step 2: Convert to fraction form
    3,047.82/4,549.68 = 2,678.78/x
  3. Step 3: Cross multiply
    3,047.82x = 4,549.68 × 2,678.78
  4. Step 4: Simplify right side
    3,047.82x = 12,187,591.79
  5. Step 5: Solve for x
    x = 12,187,591.79/3,047.82
  6. Step 6: Final answer
    x = 3,998.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.