Home / 3,845.20-5,306.17-2,166.57

Finding the Fourth Proportional to 3,845.20, 5,306.17 and 2,166.57

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Solution

The fourth proportional to 3,845.20, 5,306.17 and 2,166.57 is: 2,989.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,845.20 : 5,306.17 = 2,166.57 : x
  2. Step 2: Convert to fraction form
    3,845.20/5,306.17 = 2,166.57/x
  3. Step 3: Cross multiply
    3,845.20x = 5,306.17 × 2,166.57
  4. Step 4: Simplify right side
    3,845.20x = 11,496,188.74
  5. Step 5: Solve for x
    x = 11,496,188.74/3,845.20
  6. Step 6: Final answer
    x = 2,989.75

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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.