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Finding the Fourth Proportional to 7,874.88, 10,868.16 and 4,518

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Solution

The fourth proportional to 7,874.88, 10,868.16 and 4,518 is: 6,235.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,874.88 : 10,868.16 = 4,518 : x
  2. Step 2: Convert to fraction form
    7,874.88/10,868.16 = 4,518/x
  3. Step 3: Cross multiply
    7,874.88x = 10,868.16 × 4,518
  4. Step 4: Simplify right side
    7,874.88x = 49,102,346.88
  5. Step 5: Solve for x
    x = 49,102,346.88/7,874.88
  6. Step 6: Final answer
    x = 6,235.31

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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.