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Finding the Fourth Proportional to 2,503, 3,454.16 and 1,399

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Solution

The fourth proportional to 2,503, 3,454.16 and 1,399 is: 1,930.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,503 : 3,454.16 = 1,399 : x
  2. Step 2: Convert to fraction form
    2,503/3,454.16 = 1,399/x
  3. Step 3: Cross multiply
    2,503x = 3,454.16 × 1,399
  4. Step 4: Simplify right side
    2,503x = 4,832,369.84
  5. Step 5: Solve for x
    x = 4,832,369.84/2,503
  6. Step 6: Final answer
    x = 1,930.63

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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.