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Finding the Fourth Proportional to 6,219.60, 9,336.60 and 3,757.20

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Solution

The fourth proportional to 6,219.60, 9,336.60 and 3,757.20 is: 5,640.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,219.60 : 9,336.60 = 3,757.20 : x
  2. Step 2: Convert to fraction form
    6,219.60/9,336.60 = 3,757.20/x
  3. Step 3: Cross multiply
    6,219.60x = 9,336.60 × 3,757.20
  4. Step 4: Simplify right side
    6,219.60x = 35,079,473.52
  5. Step 5: Solve for x
    x = 35,079,473.52/6,219.60
  6. Step 6: Final answer
    x = 5,640.15

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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.