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Finding the Fourth Proportional to 1,723.98, 2,379.08 and 938.03

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Solution

The fourth proportional to 1,723.98, 2,379.08 and 938.03 is: 1,294.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,723.98 : 2,379.08 = 938.03 : x
  2. Step 2: Convert to fraction form
    1,723.98/2,379.08 = 938.03/x
  3. Step 3: Cross multiply
    1,723.98x = 2,379.08 × 938.03
  4. Step 4: Simplify right side
    1,723.98x = 2,231,644.81
  5. Step 5: Solve for x
    x = 2,231,644.81/1,723.98
  6. Step 6: Final answer
    x = 1,294.47

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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.