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Finding the Fourth Proportional to 2,887.92, 3,979.80 and 2,058.48

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Solution

The fourth proportional to 2,887.92, 3,979.80 and 2,058.48 is: 2,836.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,887.92 : 3,979.80 = 2,058.48 : x
  2. Step 2: Convert to fraction form
    2,887.92/3,979.80 = 2,058.48/x
  3. Step 3: Cross multiply
    2,887.92x = 3,979.80 × 2,058.48
  4. Step 4: Simplify right side
    2,887.92x = 8,192,338.70
  5. Step 5: Solve for x
    x = 8,192,338.70/2,887.92
  6. Step 6: Final answer
    x = 2,836.76

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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.