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Finding the Fourth Proportional to 1,371.18, 1,893.09 and 951.40

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Solution

The fourth proportional to 1,371.18, 1,893.09 and 951.40 is: 1,313.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,371.18 : 1,893.09 = 951.40 : x
  2. Step 2: Convert to fraction form
    1,371.18/1,893.09 = 951.40/x
  3. Step 3: Cross multiply
    1,371.18x = 1,893.09 × 951.40
  4. Step 4: Simplify right side
    1,371.18x = 1,801,084.66
  5. Step 5: Solve for x
    x = 1,801,084.66/1,371.18
  6. Step 6: Final answer
    x = 1,313.53

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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.