Home / 3,943.70-5,442.04-2,175.32

Finding the Fourth Proportional to 3,943.70, 5,442.04 and 2,175.32

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Solution

The fourth proportional to 3,943.70, 5,442.04 and 2,175.32 is: 3,001.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,943.70 : 5,442.04 = 2,175.32 : x
  2. Step 2: Convert to fraction form
    3,943.70/5,442.04 = 2,175.32/x
  3. Step 3: Cross multiply
    3,943.70x = 5,442.04 × 2,175.32
  4. Step 4: Simplify right side
    3,943.70x = 11,838,178.45
  5. Step 5: Solve for x
    x = 11,838,178.45/3,943.70
  6. Step 6: Final answer
    x = 3,001.79

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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.