Home / 3,957.05-5,460.82-2,188.78

Finding the Fourth Proportional to 3,957.05, 5,460.82 and 2,188.78

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Solution

The fourth proportional to 3,957.05, 5,460.82 and 2,188.78 is: 3,020.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,957.05 : 5,460.82 = 2,188.78 : x
  2. Step 2: Convert to fraction form
    3,957.05/5,460.82 = 2,188.78/x
  3. Step 3: Cross multiply
    3,957.05x = 5,460.82 × 2,188.78
  4. Step 4: Simplify right side
    3,957.05x = 11,952,514.48
  5. Step 5: Solve for x
    x = 11,952,514.48/3,957.05
  6. Step 6: Final answer
    x = 3,020.56

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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.