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Finding the Fourth Proportional to 2,228.46, 3,342.33 and 689.34

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Solution

The fourth proportional to 2,228.46, 3,342.33 and 689.34 is: 1,033.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,228.46 : 3,342.33 = 689.34 : x
  2. Step 2: Convert to fraction form
    2,228.46/3,342.33 = 689.34/x
  3. Step 3: Cross multiply
    2,228.46x = 3,342.33 × 689.34
  4. Step 4: Simplify right side
    2,228.46x = 2,304,001.76
  5. Step 5: Solve for x
    x = 2,304,001.76/2,228.46
  6. Step 6: Final answer
    x = 1,033.90

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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.