Home / 2,849.30-3,930.85-1,892.66

Finding the Fourth Proportional to 2,849.30, 3,930.85 and 1,892.66

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Solution

The fourth proportional to 2,849.30, 3,930.85 and 1,892.66 is: 2,611.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,849.30 : 3,930.85 = 1,892.66 : x
  2. Step 2: Convert to fraction form
    2,849.30/3,930.85 = 1,892.66/x
  3. Step 3: Cross multiply
    2,849.30x = 3,930.85 × 1,892.66
  4. Step 4: Simplify right side
    2,849.30x = 7,439,753.10
  5. Step 5: Solve for x
    x = 7,439,753.10/2,849.30
  6. Step 6: Final answer
    x = 2,611.08

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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.