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Finding the Fourth Proportional to 3,950.78, 5,451.81 and 2,182.34

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Solution

The fourth proportional to 3,950.78, 5,451.81 and 2,182.34 is: 3,011.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,950.78 : 5,451.81 = 2,182.34 : x
  2. Step 2: Convert to fraction form
    3,950.78/5,451.81 = 2,182.34/x
  3. Step 3: Cross multiply
    3,950.78x = 5,451.81 × 2,182.34
  4. Step 4: Simplify right side
    3,950.78x = 11,897,708.48
  5. Step 5: Solve for x
    x = 11,897,708.48/3,950.78
  6. Step 6: Final answer
    x = 3,011.49

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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.