Home / 3,836.79-5,294.85-2,158.17

Finding the Fourth Proportional to 3,836.79, 5,294.85 and 2,158.17

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Solution

The fourth proportional to 3,836.79, 5,294.85 and 2,158.17 is: 2,978.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,836.79 : 5,294.85 = 2,158.17 : x
  2. Step 2: Convert to fraction form
    3,836.79/5,294.85 = 2,158.17/x
  3. Step 3: Cross multiply
    3,836.79x = 5,294.85 × 2,158.17
  4. Step 4: Simplify right side
    3,836.79x = 11,427,186.42
  5. Step 5: Solve for x
    x = 11,427,186.42/3,836.79
  6. Step 6: Final answer
    x = 2,978.32

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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.