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Finding the Fourth Proportional to 3,469.05, 4,788.89 and 2,143.53

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Solution

The fourth proportional to 3,469.05, 4,788.89 and 2,143.53 is: 2,959.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,469.05 : 4,788.89 = 2,143.53 : x
  2. Step 2: Convert to fraction form
    3,469.05/4,788.89 = 2,143.53/x
  3. Step 3: Cross multiply
    3,469.05x = 4,788.89 × 2,143.53
  4. Step 4: Simplify right side
    3,469.05x = 10,265,118.66
  5. Step 5: Solve for x
    x = 10,265,118.66/3,469.05
  6. Step 6: Final answer
    x = 2,959.06

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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.