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Finding the Fourth Proportional to 5,274.93, 7,279.43 and 2,917.11

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Solution

The fourth proportional to 5,274.93, 7,279.43 and 2,917.11 is: 4,025.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,274.93 : 7,279.43 = 2,917.11 : x
  2. Step 2: Convert to fraction form
    5,274.93/7,279.43 = 2,917.11/x
  3. Step 3: Cross multiply
    5,274.93x = 7,279.43 × 2,917.11
  4. Step 4: Simplify right side
    5,274.93x = 21,234,883.46
  5. Step 5: Solve for x
    x = 21,234,883.46/5,274.93
  6. Step 6: Final answer
    x = 4,025.62

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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.