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Finding the Fourth Proportional to 2,789.28, 4,175.28 and 2,235.24

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Solution

The fourth proportional to 2,789.28, 4,175.28 and 2,235.24 is: 3,345.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,789.28 : 4,175.28 = 2,235.24 : x
  2. Step 2: Convert to fraction form
    2,789.28/4,175.28 = 2,235.24/x
  3. Step 3: Cross multiply
    2,789.28x = 4,175.28 × 2,235.24
  4. Step 4: Simplify right side
    2,789.28x = 9,332,752.87
  5. Step 5: Solve for x
    x = 9,332,752.87/2,789.28
  6. Step 6: Final answer
    x = 3,345.94

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1.5x scale

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.