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Finding the Fourth Proportional to 7,954.80, 11,932.20 and 6,205.20

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Solution

The fourth proportional to 7,954.80, 11,932.20 and 6,205.20 is: 9,307.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,954.80 : 11,932.20 = 6,205.20 : x
  2. Step 2: Convert to fraction form
    7,954.80/11,932.20 = 6,205.20/x
  3. Step 3: Cross multiply
    7,954.80x = 11,932.20 × 6,205.20
  4. Step 4: Simplify right side
    7,954.80x = 74,041,687.44
  5. Step 5: Solve for x
    x = 74,041,687.44/7,954.80
  6. Step 6: Final answer
    x = 9,307.80

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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.