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Finding the Fourth Proportional to 3,445.75, 5,167.08 and 979.99

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Solution

The fourth proportional to 3,445.75, 5,167.08 and 979.99 is: 1,469.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,445.75 : 5,167.08 = 979.99 : x
  2. Step 2: Convert to fraction form
    3,445.75/5,167.08 = 979.99/x
  3. Step 3: Cross multiply
    3,445.75x = 5,167.08 × 979.99
  4. Step 4: Simplify right side
    3,445.75x = 5,063,686.73
  5. Step 5: Solve for x
    x = 5,063,686.73/3,445.75
  6. Step 6: Final answer
    x = 1,469.55

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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.