Home / 3,948.72-5,448.78-2,269.80

Finding the Fourth Proportional to 3,948.72, 5,448.78 and 2,269.80

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Solution

The fourth proportional to 3,948.72, 5,448.78 and 2,269.80 is: 3,132.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,948.72 : 5,448.78 = 2,269.80 : x
  2. Step 2: Convert to fraction form
    3,948.72/5,448.78 = 2,269.80/x
  3. Step 3: Cross multiply
    3,948.72x = 5,448.78 × 2,269.80
  4. Step 4: Simplify right side
    3,948.72x = 12,367,640.84
  5. Step 5: Solve for x
    x = 12,367,640.84/3,948.72
  6. Step 6: Final answer
    x = 3,132.06

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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.