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Finding the Fourth Proportional to 2,144.81, 3,217.22 and 846.28

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Solution

The fourth proportional to 2,144.81, 3,217.22 and 846.28 is: 1,269.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,144.81 : 3,217.22 = 846.28 : x
  2. Step 2: Convert to fraction form
    2,144.81/3,217.22 = 846.28/x
  3. Step 3: Cross multiply
    2,144.81x = 3,217.22 × 846.28
  4. Step 4: Simplify right side
    2,144.81x = 2,722,671.91
  5. Step 5: Solve for x
    x = 2,722,671.91/2,144.81
  6. Step 6: Final answer
    x = 1,269.42

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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.