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Finding the Fourth Proportional to 5,356.57, 7,392.05 and 2,998.71

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Solution

The fourth proportional to 5,356.57, 7,392.05 and 2,998.71 is: 4,138.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,356.57 : 7,392.05 = 2,998.71 : x
  2. Step 2: Convert to fraction form
    5,356.57/7,392.05 = 2,998.71/x
  3. Step 3: Cross multiply
    5,356.57x = 7,392.05 × 2,998.71
  4. Step 4: Simplify right side
    5,356.57x = 22,166,614.26
  5. Step 5: Solve for x
    x = 22,166,614.26/5,356.57
  6. Step 6: Final answer
    x = 4,138.21

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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.