Home / 3,950.90-5,452.10-2,158.38

Finding the Fourth Proportional to 3,950.90, 5,452.10 and 2,158.38

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Solution

The fourth proportional to 3,950.90, 5,452.10 and 2,158.38 is: 2,978.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,950.90 : 5,452.10 = 2,158.38 : x
  2. Step 2: Convert to fraction form
    3,950.90/5,452.10 = 2,158.38/x
  3. Step 3: Cross multiply
    3,950.90x = 5,452.10 × 2,158.38
  4. Step 4: Simplify right side
    3,950.90x = 11,767,703.60
  5. Step 5: Solve for x
    x = 11,767,703.60/3,950.90
  6. Step 6: Final answer
    x = 2,978.49

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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.