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Finding the Fourth Proportional to 6,689.96, 9,994.26 and 4,330.75

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Solution

The fourth proportional to 6,689.96, 9,994.26 and 4,330.75 is: 6,469.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,689.96 : 9,994.26 = 4,330.75 : x
  2. Step 2: Convert to fraction form
    6,689.96/9,994.26 = 4,330.75/x
  3. Step 3: Cross multiply
    6,689.96x = 9,994.26 × 4,330.75
  4. Step 4: Simplify right side
    6,689.96x = 43,282,594.86
  5. Step 5: Solve for x
    x = 43,282,594.86/6,689.96
  6. Step 6: Final answer
    x = 6,469.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.