Home / 3,927.29-5,419.52-2,158.88

Finding the Fourth Proportional to 3,927.29, 5,419.52 and 2,158.88

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Solution

The fourth proportional to 3,927.29, 5,419.52 and 2,158.88 is: 2,979.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,927.29 : 5,419.52 = 2,158.88 : x
  2. Step 2: Convert to fraction form
    3,927.29/5,419.52 = 2,158.88/x
  3. Step 3: Cross multiply
    3,927.29x = 5,419.52 × 2,158.88
  4. Step 4: Simplify right side
    3,927.29x = 11,700,112.28
  5. Step 5: Solve for x
    x = 11,700,112.28/3,927.29
  6. Step 6: Final answer
    x = 2,979.18

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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.