Home / 3,128.55-4,691.61-1,179.69

Finding the Fourth Proportional to 3,128.55, 4,691.61 and 1,179.69

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Solution

The fourth proportional to 3,128.55, 4,691.61 and 1,179.69 is: 1,769.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.55 : 4,691.61 = 1,179.69 : x
  2. Step 2: Convert to fraction form
    3,128.55/4,691.61 = 1,179.69/x
  3. Step 3: Cross multiply
    3,128.55x = 4,691.61 × 1,179.69
  4. Step 4: Simplify right side
    3,128.55x = 5,534,645.40
  5. Step 5: Solve for x
    x = 5,534,645.40/3,128.55
  6. Step 6: Final answer
    x = 1,769.08

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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.