Home / 3,922.16-5,415.11-2,431.66

Finding the Fourth Proportional to 3,922.16, 5,415.11 and 2,431.66

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Solution

The fourth proportional to 3,922.16, 5,415.11 and 2,431.66 is: 3,357.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,922.16 : 5,415.11 = 2,431.66 : x
  2. Step 2: Convert to fraction form
    3,922.16/5,415.11 = 2,431.66/x
  3. Step 3: Cross multiply
    3,922.16x = 5,415.11 × 2,431.66
  4. Step 4: Simplify right side
    3,922.16x = 13,167,706.38
  5. Step 5: Solve for x
    x = 13,167,706.38/3,922.16
  6. Step 6: Final answer
    x = 3,357.26

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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.