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Finding the Fourth Proportional to 2,858.92, 3,945.12 and 1,599.92

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Solution

The fourth proportional to 2,858.92, 3,945.12 and 1,599.92 is: 2,207.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,858.92 : 3,945.12 = 1,599.92 : x
  2. Step 2: Convert to fraction form
    2,858.92/3,945.12 = 1,599.92/x
  3. Step 3: Cross multiply
    2,858.92x = 3,945.12 × 1,599.92
  4. Step 4: Simplify right side
    2,858.92x = 6,311,876.39
  5. Step 5: Solve for x
    x = 6,311,876.39/2,858.92
  6. Step 6: Final answer
    x = 2,207.78

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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.