Home / 3,836.84-5,294.90-2,158.65

Finding the Fourth Proportional to 3,836.84, 5,294.90 and 2,158.65

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Solution

The fourth proportional to 3,836.84, 5,294.90 and 2,158.65 is: 2,978.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,836.84 : 5,294.90 = 2,158.65 : x
  2. Step 2: Convert to fraction form
    3,836.84/5,294.90 = 2,158.65/x
  3. Step 3: Cross multiply
    3,836.84x = 5,294.90 × 2,158.65
  4. Step 4: Simplify right side
    3,836.84x = 11,429,841.28
  5. Step 5: Solve for x
    x = 11,429,841.28/3,836.84
  6. Step 6: Final answer
    x = 2,978.98

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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.