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Finding the Fourth Proportional to 2,256.96, 3,115.84 and 1,372.96

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Solution

The fourth proportional to 2,256.96, 3,115.84 and 1,372.96 is: 1,895.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,256.96 : 3,115.84 = 1,372.96 : x
  2. Step 2: Convert to fraction form
    2,256.96/3,115.84 = 1,372.96/x
  3. Step 3: Cross multiply
    2,256.96x = 3,115.84 × 1,372.96
  4. Step 4: Simplify right side
    2,256.96x = 4,277,923.69
  5. Step 5: Solve for x
    x = 4,277,923.69/2,256.96
  6. Step 6: Final answer
    x = 1,895.44

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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.