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Finding the Fourth Proportional to 8,718.03, 13,044.65 and 5,209.92

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Solution

The fourth proportional to 8,718.03, 13,044.65 and 5,209.92 is: 7,795.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,718.03 : 13,044.65 = 5,209.92 : x
  2. Step 2: Convert to fraction form
    8,718.03/13,044.65 = 5,209.92/x
  3. Step 3: Cross multiply
    8,718.03x = 13,044.65 × 5,209.92
  4. Step 4: Simplify right side
    8,718.03x = 67,961,556.88
  5. Step 5: Solve for x
    x = 67,961,556.88/8,718.03
  6. Step 6: Final answer
    x = 7,795.52

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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.