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Finding the Fourth Proportional to 6,391.27, 9,583.06 and 2,640.16

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Solution

The fourth proportional to 6,391.27, 9,583.06 and 2,640.16 is: 3,958.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,391.27 : 9,583.06 = 2,640.16 : x
  2. Step 2: Convert to fraction form
    6,391.27/9,583.06 = 2,640.16/x
  3. Step 3: Cross multiply
    6,391.27x = 9,583.06 × 2,640.16
  4. Step 4: Simplify right side
    6,391.27x = 25,300,811.69
  5. Step 5: Solve for x
    x = 25,300,811.69/6,391.27
  6. Step 6: Final answer
    x = 3,958.65

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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.