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Finding the Fourth Proportional to 6,266.60, 9,387.30 and 3,919.40

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Solution

The fourth proportional to 6,266.60, 9,387.30 and 3,919.40 is: 5,871.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,266.60 : 9,387.30 = 3,919.40 : x
  2. Step 2: Convert to fraction form
    6,266.60/9,387.30 = 3,919.40/x
  3. Step 3: Cross multiply
    6,266.60x = 9,387.30 × 3,919.40
  4. Step 4: Simplify right side
    6,266.60x = 36,792,583.62
  5. Step 5: Solve for x
    x = 36,792,583.62/6,266.60
  6. Step 6: Final answer
    x = 5,871.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.