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Finding the Fourth Proportional to 6,891.60, 10,334.40 and 3,192.60

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Solution

The fourth proportional to 6,891.60, 10,334.40 and 3,192.60 is: 4,787.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,891.60 : 10,334.40 = 3,192.60 : x
  2. Step 2: Convert to fraction form
    6,891.60/10,334.40 = 3,192.60/x
  3. Step 3: Cross multiply
    6,891.60x = 10,334.40 × 3,192.60
  4. Step 4: Simplify right side
    6,891.60x = 32,993,605.44
  5. Step 5: Solve for x
    x = 32,993,605.44/6,891.60
  6. Step 6: Final answer
    x = 4,787.51

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1.5x scale

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.