Home / 3,849.45-5,312.24-2,170.86

Finding the Fourth Proportional to 3,849.45, 5,312.24 and 2,170.86

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Solution

The fourth proportional to 3,849.45, 5,312.24 and 2,170.86 is: 2,995.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,849.45 : 5,312.24 = 2,170.86 : x
  2. Step 2: Convert to fraction form
    3,849.45/5,312.24 = 2,170.86/x
  3. Step 3: Cross multiply
    3,849.45x = 5,312.24 × 2,170.86
  4. Step 4: Simplify right side
    3,849.45x = 11,532,129.33
  5. Step 5: Solve for x
    x = 11,532,129.33/3,849.45
  6. Step 6: Final answer
    x = 2,995.79

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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.