Home / 8,647.38-12,968.91-2,805.66

Finding the Fourth Proportional to 8,647.38, 12,968.91 and 2,805.66

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Solution

The fourth proportional to 8,647.38, 12,968.91 and 2,805.66 is: 4,207.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,647.38 : 12,968.91 = 2,805.66 : x
  2. Step 2: Convert to fraction form
    8,647.38/12,968.91 = 2,805.66/x
  3. Step 3: Cross multiply
    8,647.38x = 12,968.91 × 2,805.66
  4. Step 4: Simplify right side
    8,647.38x = 36,386,352.03
  5. Step 5: Solve for x
    x = 36,386,352.03/8,647.38
  6. Step 6: Final answer
    x = 4,207.79

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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.