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Finding the Fourth Proportional to 8,712.65, 13,074.12 and 3,448.17

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Solution

The fourth proportional to 8,712.65, 13,074.12 and 3,448.17 is: 5,174.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,712.65 : 13,074.12 = 3,448.17 : x
  2. Step 2: Convert to fraction form
    8,712.65/13,074.12 = 3,448.17/x
  3. Step 3: Cross multiply
    8,712.65x = 13,074.12 × 3,448.17
  4. Step 4: Simplify right side
    8,712.65x = 45,081,788.36
  5. Step 5: Solve for x
    x = 45,081,788.36/8,712.65
  6. Step 6: Final answer
    x = 5,174.29

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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.