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Finding the Fourth Proportional to 7,279.98, 10,919.98 and 2,897.48

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Solution

The fourth proportional to 7,279.98, 10,919.98 and 2,897.48 is: 4,346.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,279.98 : 10,919.98 = 2,897.48 : x
  2. Step 2: Convert to fraction form
    7,279.98/10,919.98 = 2,897.48/x
  3. Step 3: Cross multiply
    7,279.98x = 10,919.98 × 2,897.48
  4. Step 4: Simplify right side
    7,279.98x = 31,640,381.86
  5. Step 5: Solve for x
    x = 31,640,381.86/7,279.98
  6. Step 6: Final answer
    x = 4,346.22

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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.