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Finding the Fourth Proportional to 7,959.28, 10,984.02 and 4,422.80

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Solution

The fourth proportional to 7,959.28, 10,984.02 and 4,422.80 is: 6,103.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,959.28 : 10,984.02 = 4,422.80 : x
  2. Step 2: Convert to fraction form
    7,959.28/10,984.02 = 4,422.80/x
  3. Step 3: Cross multiply
    7,959.28x = 10,984.02 × 4,422.80
  4. Step 4: Simplify right side
    7,959.28x = 48,580,123.66
  5. Step 5: Solve for x
    x = 48,580,123.66/7,959.28
  6. Step 6: Final answer
    x = 6,103.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.