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Finding the Fourth Proportional to 6,874.56, 10,312.80 and 3,409.92

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Solution

The fourth proportional to 6,874.56, 10,312.80 and 3,409.92 is: 5,115.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,874.56 : 10,312.80 = 3,409.92 : x
  2. Step 2: Convert to fraction form
    6,874.56/10,312.80 = 3,409.92/x
  3. Step 3: Cross multiply
    6,874.56x = 10,312.80 × 3,409.92
  4. Step 4: Simplify right side
    6,874.56x = 35,165,822.98
  5. Step 5: Solve for x
    x = 35,165,822.98/6,874.56
  6. Step 6: Final answer
    x = 5,115.36

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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.