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Finding the Fourth Proportional to 3,959.20, 5,953.20 and 3,325.60

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Solution

The fourth proportional to 3,959.20, 5,953.20 and 3,325.60 is: 5,000.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,959.20 : 5,953.20 = 3,325.60 : x
  2. Step 2: Convert to fraction form
    3,959.20/5,953.20 = 3,325.60/x
  3. Step 3: Cross multiply
    3,959.20x = 5,953.20 × 3,325.60
  4. Step 4: Simplify right side
    3,959.20x = 19,797,961.92
  5. Step 5: Solve for x
    x = 19,797,961.92/3,959.20
  6. Step 6: Final answer
    x = 5,000.50

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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.