Home / 3,849.28-5,312.10-2,170.76

Finding the Fourth Proportional to 3,849.28, 5,312.10 and 2,170.76

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Solution

The fourth proportional to 3,849.28, 5,312.10 and 2,170.76 is: 2,995.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,849.28 : 5,312.10 = 2,170.76 : x
  2. Step 2: Convert to fraction form
    3,849.28/5,312.10 = 2,170.76/x
  3. Step 3: Cross multiply
    3,849.28x = 5,312.10 × 2,170.76
  4. Step 4: Simplify right side
    3,849.28x = 11,531,294.20
  5. Step 5: Solve for x
    x = 11,531,294.20/3,849.28
  6. Step 6: Final answer
    x = 2,995.70

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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.