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Finding the Fourth Proportional to 8,859.65, 13,284.81 and 3,927.15

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Solution

The fourth proportional to 8,859.65, 13,284.81 and 3,927.15 is: 5,888.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,859.65 : 13,284.81 = 3,927.15 : x
  2. Step 2: Convert to fraction form
    8,859.65/13,284.81 = 3,927.15/x
  3. Step 3: Cross multiply
    8,859.65x = 13,284.81 × 3,927.15
  4. Step 4: Simplify right side
    8,859.65x = 52,171,441.59
  5. Step 5: Solve for x
    x = 52,171,441.59/8,859.65
  6. Step 6: Final answer
    x = 5,888.66

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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.