Home / 8,648.58-12,972.94-2,805.18

Finding the Fourth Proportional to 8,648.58, 12,972.94 and 2,805.18

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Solution

The fourth proportional to 8,648.58, 12,972.94 and 2,805.18 is: 4,207.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,648.58 : 12,972.94 = 2,805.18 : x
  2. Step 2: Convert to fraction form
    8,648.58/12,972.94 = 2,805.18/x
  3. Step 3: Cross multiply
    8,648.58x = 12,972.94 × 2,805.18
  4. Step 4: Simplify right side
    8,648.58x = 36,391,431.83
  5. Step 5: Solve for x
    x = 36,391,431.83/8,648.58
  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.