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Finding the Fourth Proportional to 1,703.92, 2,553.43 and 971.98

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Solution

The fourth proportional to 1,703.92, 2,553.43 and 971.98 is: 1,456.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,703.92 : 2,553.43 = 971.98 : x
  2. Step 2: Convert to fraction form
    1,703.92/2,553.43 = 971.98/x
  3. Step 3: Cross multiply
    1,703.92x = 2,553.43 × 971.98
  4. Step 4: Simplify right side
    1,703.92x = 2,481,882.89
  5. Step 5: Solve for x
    x = 2,481,882.89/1,703.92
  6. Step 6: Final answer
    x = 1,456.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.