Home / 3,846.20-5,767.40-1,248.80

Finding the Fourth Proportional to 3,846.20, 5,767.40 and 1,248.80

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Solution

The fourth proportional to 3,846.20, 5,767.40 and 1,248.80 is: 1,872.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,846.20 : 5,767.40 = 1,248.80 : x
  2. Step 2: Convert to fraction form
    3,846.20/5,767.40 = 1,248.80/x
  3. Step 3: Cross multiply
    3,846.20x = 5,767.40 × 1,248.80
  4. Step 4: Simplify right side
    3,846.20x = 7,202,329.12
  5. Step 5: Solve for x
    x = 7,202,329.12/3,846.20
  6. Step 6: Final answer
    x = 1,872.58

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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.