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Finding the Fourth Proportional to 1,512.40, 2,086.50 and 951.88

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Solution

The fourth proportional to 1,512.40, 2,086.50 and 951.88 is: 1,313.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,512.40 : 2,086.50 = 951.88 : x
  2. Step 2: Convert to fraction form
    1,512.40/2,086.50 = 951.88/x
  3. Step 3: Cross multiply
    1,512.40x = 2,086.50 × 951.88
  4. Step 4: Simplify right side
    1,512.40x = 1,986,097.62
  5. Step 5: Solve for x
    x = 1,986,097.62/1,512.40
  6. Step 6: Final answer
    x = 1,313.21

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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.