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Finding the Fourth Proportional to 6,855.18, 9,461 and 3,871.14

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Solution

The fourth proportional to 6,855.18, 9,461 and 3,871.14 is: 5,342.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,855.18 : 9,461 = 3,871.14 : x
  2. Step 2: Convert to fraction form
    6,855.18/9,461 = 3,871.14/x
  3. Step 3: Cross multiply
    6,855.18x = 9,461 × 3,871.14
  4. Step 4: Simplify right side
    6,855.18x = 36,624,855.54
  5. Step 5: Solve for x
    x = 36,624,855.54/6,855.18
  6. Step 6: Final answer
    x = 5,342.65

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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.