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Finding the Fourth Proportional to 2,129.92, 3,193.39 and 896.32

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Solution

The fourth proportional to 2,129.92, 3,193.39 and 896.32 is: 1,343.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,129.92 : 3,193.39 = 896.32 : x
  2. Step 2: Convert to fraction form
    2,129.92/3,193.39 = 896.32/x
  3. Step 3: Cross multiply
    2,129.92x = 3,193.39 × 896.32
  4. Step 4: Simplify right side
    2,129.92x = 2,862,299.32
  5. Step 5: Solve for x
    x = 2,862,299.32/2,129.92
  6. Step 6: Final answer
    x = 1,343.85

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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.