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Finding the Fourth Proportional to 6,239.84, 8,612.84 and 3,723.71

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Solution

The fourth proportional to 6,239.84, 8,612.84 and 3,723.71 is: 5,139.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,239.84 : 8,612.84 = 3,723.71 : x
  2. Step 2: Convert to fraction form
    6,239.84/8,612.84 = 3,723.71/x
  3. Step 3: Cross multiply
    6,239.84x = 8,612.84 × 3,723.71
  4. Step 4: Simplify right side
    6,239.84x = 32,071,684.68
  5. Step 5: Solve for x
    x = 32,071,684.68/6,239.84
  6. Step 6: Final answer
    x = 5,139.83

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1.5x scale

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.