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Finding the Fourth Proportional to 1,487.50, 2,052.29 and 857.95

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Solution

The fourth proportional to 1,487.50, 2,052.29 and 857.95 is: 1,183.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,487.50 : 2,052.29 = 857.95 : x
  2. Step 2: Convert to fraction form
    1,487.50/2,052.29 = 857.95/x
  3. Step 3: Cross multiply
    1,487.50x = 2,052.29 × 857.95
  4. Step 4: Simplify right side
    1,487.50x = 1,760,759.22
  5. Step 5: Solve for x
    x = 1,760,759.22/1,487.50
  6. Step 6: Final answer
    x = 1,183.71

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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.