Home / 3,943.40-5,441.88-2,175.20

Finding the Fourth Proportional to 3,943.40, 5,441.88 and 2,175.20

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Solution

The fourth proportional to 3,943.40, 5,441.88 and 2,175.20 is: 3,001.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,943.40 : 5,441.88 = 2,175.20 : x
  2. Step 2: Convert to fraction form
    3,943.40/5,441.88 = 2,175.20/x
  3. Step 3: Cross multiply
    3,943.40x = 5,441.88 × 2,175.20
  4. Step 4: Simplify right side
    3,943.40x = 11,837,177.38
  5. Step 5: Solve for x
    x = 11,837,177.38/3,943.40
  6. Step 6: Final answer
    x = 3,001.77

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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.