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Finding the Fourth Proportional to 1,753.70, 2,419.88 and 997.46

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Solution

The fourth proportional to 1,753.70, 2,419.88 and 997.46 is: 1,376.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,753.70 : 2,419.88 = 997.46 : x
  2. Step 2: Convert to fraction form
    1,753.70/2,419.88 = 997.46/x
  3. Step 3: Cross multiply
    1,753.70x = 2,419.88 × 997.46
  4. Step 4: Simplify right side
    1,753.70x = 2,413,725.49
  5. Step 5: Solve for x
    x = 2,413,725.49/1,753.70
  6. Step 6: Final answer
    x = 1,376.37

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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.