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Finding the Fourth Proportional to 1,723.70, 2,378.70 and 937.75

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Solution

The fourth proportional to 1,723.70, 2,378.70 and 937.75 is: 1,294.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,723.70 : 2,378.70 = 937.75 : x
  2. Step 2: Convert to fraction form
    1,723.70/2,378.70 = 937.75/x
  3. Step 3: Cross multiply
    1,723.70x = 2,378.70 × 937.75
  4. Step 4: Simplify right side
    1,723.70x = 2,230,625.93
  5. Step 5: Solve for x
    x = 2,230,625.93/1,723.70
  6. Step 6: Final answer
    x = 1,294.09

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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.