Home / 3,248.12-4,872.30-939.80

Finding the Fourth Proportional to 3,248.12, 4,872.30 and 939.80

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Solution

The fourth proportional to 3,248.12, 4,872.30 and 939.80 is: 1,409.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,248.12 : 4,872.30 = 939.80 : x
  2. Step 2: Convert to fraction form
    3,248.12/4,872.30 = 939.80/x
  3. Step 3: Cross multiply
    3,248.12x = 4,872.30 × 939.80
  4. Step 4: Simplify right side
    3,248.12x = 4,578,987.54
  5. Step 5: Solve for x
    x = 4,578,987.54/3,248.12
  6. Step 6: Final answer
    x = 1,409.73

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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.