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Finding the Fourth Proportional to 1,631.65, 2,251.91 and 959.42

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Solution

The fourth proportional to 1,631.65, 2,251.91 and 959.42 is: 1,324.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,631.65 : 2,251.91 = 959.42 : x
  2. Step 2: Convert to fraction form
    1,631.65/2,251.91 = 959.42/x
  3. Step 3: Cross multiply
    1,631.65x = 2,251.91 × 959.42
  4. Step 4: Simplify right side
    1,631.65x = 2,160,527.49
  5. Step 5: Solve for x
    x = 2,160,527.49/1,631.65
  6. Step 6: Final answer
    x = 1,324.14

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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.