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Finding the Fourth Proportional to 6,613.87, 9,915.62 and 3,443.65

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Solution

The fourth proportional to 6,613.87, 9,915.62 and 3,443.65 is: 5,162.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,613.87 : 9,915.62 = 3,443.65 : x
  2. Step 2: Convert to fraction form
    6,613.87/9,915.62 = 3,443.65/x
  3. Step 3: Cross multiply
    6,613.87x = 9,915.62 × 3,443.65
  4. Step 4: Simplify right side
    6,613.87x = 34,145,924.81
  5. Step 5: Solve for x
    x = 34,145,924.81/6,613.87
  6. Step 6: Final answer
    x = 5,162.78

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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.