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Finding the Fourth Proportional to 6,318.82, 8,719.98 and 3,486.13

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Solution

The fourth proportional to 6,318.82, 8,719.98 and 3,486.13 is: 4,810.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,318.82 : 8,719.98 = 3,486.13 : x
  2. Step 2: Convert to fraction form
    6,318.82/8,719.98 = 3,486.13/x
  3. Step 3: Cross multiply
    6,318.82x = 8,719.98 × 3,486.13
  4. Step 4: Simplify right side
    6,318.82x = 30,398,983.88
  5. Step 5: Solve for x
    x = 30,398,983.88/6,318.82
  6. Step 6: Final answer
    x = 4,810.86

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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.