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Finding the Fourth Proportional to 6,771.40, 9,344.68 and 3,787.20

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Solution

The fourth proportional to 6,771.40, 9,344.68 and 3,787.20 is: 5,226.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,771.40 : 9,344.68 = 3,787.20 : x
  2. Step 2: Convert to fraction form
    6,771.40/9,344.68 = 3,787.20/x
  3. Step 3: Cross multiply
    6,771.40x = 9,344.68 × 3,787.20
  4. Step 4: Simplify right side
    6,771.40x = 35,390,162.63
  5. Step 5: Solve for x
    x = 35,390,162.63/6,771.40
  6. Step 6: Final answer
    x = 5,226.42

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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.