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Finding the Fourth Proportional to 5,138.64, 7,092 and 2,901

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Solution

The fourth proportional to 5,138.64, 7,092 and 2,901 is: 4,003.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,138.64 : 7,092 = 2,901 : x
  2. Step 2: Convert to fraction form
    5,138.64/7,092 = 2,901/x
  3. Step 3: Cross multiply
    5,138.64x = 7,092 × 2,901
  4. Step 4: Simplify right side
    5,138.64x = 20,573,892
  5. Step 5: Solve for x
    x = 20,573,892/5,138.64
  6. Step 6: Final answer
    x = 4,003.76

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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.