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Finding the Fourth Proportional to 3,953.96, 5,929.12 and 1,179.92

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Solution

The fourth proportional to 3,953.96, 5,929.12 and 1,179.92 is: 1,769.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,953.96 : 5,929.12 = 1,179.92 : x
  2. Step 2: Convert to fraction form
    3,953.96/5,929.12 = 1,179.92/x
  3. Step 3: Cross multiply
    3,953.96x = 5,929.12 × 1,179.92
  4. Step 4: Simplify right side
    3,953.96x = 6,995,854.68
  5. Step 5: Solve for x
    x = 6,995,854.68/3,953.96
  6. Step 6: Final answer
    x = 1,769.33

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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.