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Finding the Fourth Proportional to 8,859.64, 13,294.66 and 3,929.84

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Solution

The fourth proportional to 8,859.64, 13,294.66 and 3,929.84 is: 5,897.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,859.64 : 13,294.66 = 3,929.84 : x
  2. Step 2: Convert to fraction form
    8,859.64/13,294.66 = 3,929.84/x
  3. Step 3: Cross multiply
    8,859.64x = 13,294.66 × 3,929.84
  4. Step 4: Simplify right side
    8,859.64x = 52,245,886.65
  5. Step 5: Solve for x
    x = 52,245,886.65/8,859.64
  6. Step 6: Final answer
    x = 5,897.07

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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.