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Finding the Fourth Proportional to 7,627.68, 11,408.04 and 6,639.52

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Solution

The fourth proportional to 7,627.68, 11,408.04 and 6,639.52 is: 9,930.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,627.68 : 11,408.04 = 6,639.52 : x
  2. Step 2: Convert to fraction form
    7,627.68/11,408.04 = 6,639.52/x
  3. Step 3: Cross multiply
    7,627.68x = 11,408.04 × 6,639.52
  4. Step 4: Simplify right side
    7,627.68x = 75,743,909.74
  5. Step 5: Solve for x
    x = 75,743,909.74/7,627.68
  6. Step 6: Final answer
    x = 9,930.14

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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.