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Finding the Fourth Proportional to 1,351.96, 1,865.63 and 762.38

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Solution

The fourth proportional to 1,351.96, 1,865.63 and 762.38 is: 1,052.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,351.96 : 1,865.63 = 762.38 : x
  2. Step 2: Convert to fraction form
    1,351.96/1,865.63 = 762.38/x
  3. Step 3: Cross multiply
    1,351.96x = 1,865.63 × 762.38
  4. Step 4: Simplify right side
    1,351.96x = 1,422,318.57
  5. Step 5: Solve for x
    x = 1,422,318.57/1,351.96
  6. Step 6: Final answer
    x = 1,052.04

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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.