Home / 3,849.85-5,312.86-2,256.12

Finding the Fourth Proportional to 3,849.85, 5,312.86 and 2,256.12

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Solution

The fourth proportional to 3,849.85, 5,312.86 and 2,256.12 is: 3,113.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,849.85 : 5,312.86 = 2,256.12 : x
  2. Step 2: Convert to fraction form
    3,849.85/5,312.86 = 2,256.12/x
  3. Step 3: Cross multiply
    3,849.85x = 5,312.86 × 2,256.12
  4. Step 4: Simplify right side
    3,849.85x = 11,986,449.70
  5. Step 5: Solve for x
    x = 11,986,449.70/3,849.85
  6. Step 6: Final answer
    x = 3,113.48

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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.