Home / 3,845.30-5,306.12-2,166.44

Finding the Fourth Proportional to 3,845.30, 5,306.12 and 2,166.44

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Solution

The fourth proportional to 3,845.30, 5,306.12 and 2,166.44 is: 2,989.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,845.30 : 5,306.12 = 2,166.44 : x
  2. Step 2: Convert to fraction form
    3,845.30/5,306.12 = 2,166.44/x
  3. Step 3: Cross multiply
    3,845.30x = 5,306.12 × 2,166.44
  4. Step 4: Simplify right side
    3,845.30x = 11,495,390.61
  5. Step 5: Solve for x
    x = 11,495,390.61/3,845.30
  6. Step 6: Final answer
    x = 2,989.47

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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.