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Finding the Fourth Proportional to 1,723.90, 2,378.86 and 937.94

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Solution

The fourth proportional to 1,723.90, 2,378.86 and 937.94 is: 1,294.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,723.90 : 2,378.86 = 937.94 : x
  2. Step 2: Convert to fraction form
    1,723.90/2,378.86 = 937.94/x
  3. Step 3: Cross multiply
    1,723.90x = 2,378.86 × 937.94
  4. Step 4: Simplify right side
    1,723.90x = 2,231,227.95
  5. Step 5: Solve for x
    x = 2,231,227.95/1,723.90
  6. Step 6: Final answer
    x = 1,294.29

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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.