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Finding the Fourth Proportional to 6,311.65, 8,708.55 and 3,795.69

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Solution

The fourth proportional to 6,311.65, 8,708.55 and 3,795.69 is: 5,237.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,311.65 : 8,708.55 = 3,795.69 : x
  2. Step 2: Convert to fraction form
    6,311.65/8,708.55 = 3,795.69/x
  3. Step 3: Cross multiply
    6,311.65x = 8,708.55 × 3,795.69
  4. Step 4: Simplify right side
    6,311.65x = 33,054,937.17
  5. Step 5: Solve for x
    x = 33,054,937.17/6,311.65
  6. Step 6: Final answer
    x = 5,237.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.