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Finding the Fourth Proportional to 3,086.32, 4,255.32 and 2,256.88

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Solution

The fourth proportional to 3,086.32, 4,255.32 and 2,256.88 is: 3,111.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,086.32 : 4,255.32 = 2,256.88 : x
  2. Step 2: Convert to fraction form
    3,086.32/4,255.32 = 2,256.88/x
  3. Step 3: Cross multiply
    3,086.32x = 4,255.32 × 2,256.88
  4. Step 4: Simplify right side
    3,086.32x = 9,603,746.60
  5. Step 5: Solve for x
    x = 9,603,746.60/3,086.32
  6. Step 6: Final answer
    x = 3,111.71

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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.