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Finding the Fourth Proportional to 7,689.80, 11,532.44 and 3,306.22

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Solution

The fourth proportional to 7,689.80, 11,532.44 and 3,306.22 is: 4,958.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,689.80 : 11,532.44 = 3,306.22 : x
  2. Step 2: Convert to fraction form
    7,689.80/11,532.44 = 3,306.22/x
  3. Step 3: Cross multiply
    7,689.80x = 11,532.44 × 3,306.22
  4. Step 4: Simplify right side
    7,689.80x = 38,128,763.21
  5. Step 5: Solve for x
    x = 38,128,763.21/7,689.80
  6. Step 6: Final answer
    x = 4,958.35

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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.