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Finding the Fourth Proportional to 5,959.80, 8,939.70 and 3,778.20

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Solution

The fourth proportional to 5,959.80, 8,939.70 and 3,778.20 is: 5,667.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,959.80 : 8,939.70 = 3,778.20 : x
  2. Step 2: Convert to fraction form
    5,959.80/8,939.70 = 3,778.20/x
  3. Step 3: Cross multiply
    5,959.80x = 8,939.70 × 3,778.20
  4. Step 4: Simplify right side
    5,959.80x = 33,775,974.54
  5. Step 5: Solve for x
    x = 33,775,974.54/5,959.80
  6. Step 6: Final answer
    x = 5,667.30

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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.