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Finding the Fourth Proportional to 6,239.65, 8,607.61 and 3,719.99

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Solution

The fourth proportional to 6,239.65, 8,607.61 and 3,719.99 is: 5,131.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,239.65 : 8,607.61 = 3,719.99 : x
  2. Step 2: Convert to fraction form
    6,239.65/8,607.61 = 3,719.99/x
  3. Step 3: Cross multiply
    6,239.65x = 8,607.61 × 3,719.99
  4. Step 4: Simplify right side
    6,239.65x = 32,020,180.09
  5. Step 5: Solve for x
    x = 32,020,180.09/6,239.65
  6. Step 6: Final answer
    x = 5,131.73

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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.