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Finding the Fourth Proportional to 8,653.03, 12,981.17 and 2,808.07

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Solution

The fourth proportional to 8,653.03, 12,981.17 and 2,808.07 is: 4,212.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,653.03 : 12,981.17 = 2,808.07 : x
  2. Step 2: Convert to fraction form
    8,653.03/12,981.17 = 2,808.07/x
  3. Step 3: Cross multiply
    8,653.03x = 12,981.17 × 2,808.07
  4. Step 4: Simplify right side
    8,653.03x = 36,452,034.04
  5. Step 5: Solve for x
    x = 36,452,034.04/8,653.03
  6. Step 6: Final answer
    x = 4,212.63

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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.