Home / 3,943.36-5,442.08-2,175.12

Finding the Fourth Proportional to 3,943.36, 5,442.08 and 2,175.12

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Solution

The fourth proportional to 3,943.36, 5,442.08 and 2,175.12 is: 3,001.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,943.36 : 5,442.08 = 2,175.12 : x
  2. Step 2: Convert to fraction form
    3,943.36/5,442.08 = 2,175.12/x
  3. Step 3: Cross multiply
    3,943.36x = 5,442.08 × 2,175.12
  4. Step 4: Simplify right side
    3,943.36x = 11,837,177.05
  5. Step 5: Solve for x
    x = 11,837,177.05/3,943.36
  6. Step 6: Final answer
    x = 3,001.80

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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.