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Finding the Fourth Proportional to 2,856.16, 4,279 and 2,396.88

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Solution

The fourth proportional to 2,856.16, 4,279 and 2,396.88 is: 3,590.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,856.16 : 4,279 = 2,396.88 : x
  2. Step 2: Convert to fraction form
    2,856.16/4,279 = 2,396.88/x
  3. Step 3: Cross multiply
    2,856.16x = 4,279 × 2,396.88
  4. Step 4: Simplify right side
    2,856.16x = 10,256,249.52
  5. Step 5: Solve for x
    x = 10,256,249.52/2,856.16
  6. Step 6: Final answer
    x = 3,590.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.