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Finding the Fourth Proportional to 2,795.72, 4,194.92 and 1,979.24

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Solution

The fourth proportional to 2,795.72, 4,194.92 and 1,979.24 is: 2,969.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,795.72 : 4,194.92 = 1,979.24 : x
  2. Step 2: Convert to fraction form
    2,795.72/4,194.92 = 1,979.24/x
  3. Step 3: Cross multiply
    2,795.72x = 4,194.92 × 1,979.24
  4. Step 4: Simplify right side
    2,795.72x = 8,302,753.46
  5. Step 5: Solve for x
    x = 8,302,753.46/2,795.72
  6. Step 6: Final answer
    x = 2,969.81

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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.