Home / 8,705.78-13,054.62-3,158.42

Finding the Fourth Proportional to 8,705.78, 13,054.62 and 3,158.42

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Solution

The fourth proportional to 8,705.78, 13,054.62 and 3,158.42 is: 4,736.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,705.78 : 13,054.62 = 3,158.42 : x
  2. Step 2: Convert to fraction form
    8,705.78/13,054.62 = 3,158.42/x
  3. Step 3: Cross multiply
    8,705.78x = 13,054.62 × 3,158.42
  4. Step 4: Simplify right side
    8,705.78x = 41,231,972.90
  5. Step 5: Solve for x
    x = 41,231,972.90/8,705.78
  6. Step 6: Final answer
    x = 4,736.16

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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.