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Finding the Fourth Proportional to 6,606.80, 9,117 and 3,954.32

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Solution

The fourth proportional to 6,606.80, 9,117 and 3,954.32 is: 5,456.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,606.80 : 9,117 = 3,954.32 : x
  2. Step 2: Convert to fraction form
    6,606.80/9,117 = 3,954.32/x
  3. Step 3: Cross multiply
    6,606.80x = 9,117 × 3,954.32
  4. Step 4: Simplify right side
    6,606.80x = 36,051,535.44
  5. Step 5: Solve for x
    x = 36,051,535.44/6,606.80
  6. Step 6: Final answer
    x = 5,456.73

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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.