Home / 3,836.89-5,294.93-2,158.36

Finding the Fourth Proportional to 3,836.89, 5,294.93 and 2,158.36

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Solution

The fourth proportional to 3,836.89, 5,294.93 and 2,158.36 is: 2,978.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,836.89 : 5,294.93 = 2,158.36 : x
  2. Step 2: Convert to fraction form
    3,836.89/5,294.93 = 2,158.36/x
  3. Step 3: Cross multiply
    3,836.89x = 5,294.93 × 2,158.36
  4. Step 4: Simplify right side
    3,836.89x = 11,428,365.11
  5. Step 5: Solve for x
    x = 11,428,365.11/3,836.89
  6. Step 6: Final answer
    x = 2,978.55

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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.