Home / 3,926.54-5,418.67-2,158.13

Finding the Fourth Proportional to 3,926.54, 5,418.67 and 2,158.13

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Solution

The fourth proportional to 3,926.54, 5,418.67 and 2,158.13 is: 2,978.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,926.54 : 5,418.67 = 2,158.13 : x
  2. Step 2: Convert to fraction form
    3,926.54/5,418.67 = 2,158.13/x
  3. Step 3: Cross multiply
    3,926.54x = 5,418.67 × 2,158.13
  4. Step 4: Simplify right side
    3,926.54x = 11,694,161.80
  5. Step 5: Solve for x
    x = 11,694,161.80/3,926.54
  6. Step 6: Final answer
    x = 2,978.24

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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.