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Finding the Fourth Proportional to 6,318.62, 8,719.28 and 3,486.01

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Solution

The fourth proportional to 6,318.62, 8,719.28 and 3,486.01 is: 4,810.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,318.62 : 8,719.28 = 3,486.01 : x
  2. Step 2: Convert to fraction form
    6,318.62/8,719.28 = 3,486.01/x
  3. Step 3: Cross multiply
    6,318.62x = 8,719.28 × 3,486.01
  4. Step 4: Simplify right side
    6,318.62x = 30,395,497.27
  5. Step 5: Solve for x
    x = 30,395,497.27/6,318.62
  6. Step 6: Final answer
    x = 4,810.46

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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.