Home / 3,942.90-5,442.12-2,616.66

Finding the Fourth Proportional to 3,942.90, 5,442.12 and 2,616.66

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Solution

The fourth proportional to 3,942.90, 5,442.12 and 2,616.66 is: 3,611.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,942.90 : 5,442.12 = 2,616.66 : x
  2. Step 2: Convert to fraction form
    3,942.90/5,442.12 = 2,616.66/x
  3. Step 3: Cross multiply
    3,942.90x = 5,442.12 × 2,616.66
  4. Step 4: Simplify right side
    3,942.90x = 14,240,177.72
  5. Step 5: Solve for x
    x = 14,240,177.72/3,942.90
  6. Step 6: Final answer
    x = 3,611.60

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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.