Home / 3,934.98-5,430.14-2,166.56

Finding the Fourth Proportional to 3,934.98, 5,430.14 and 2,166.56

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Solution

The fourth proportional to 3,934.98, 5,430.14 and 2,166.56 is: 2,989.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,934.98 : 5,430.14 = 2,166.56 : x
  2. Step 2: Convert to fraction form
    3,934.98/5,430.14 = 2,166.56/x
  3. Step 3: Cross multiply
    3,934.98x = 5,430.14 × 2,166.56
  4. Step 4: Simplify right side
    3,934.98x = 11,764,724.12
  5. Step 5: Solve for x
    x = 11,764,724.12/3,934.98
  6. Step 6: Final answer
    x = 2,989.78

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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.