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Finding the Fourth Proportional to 6,639.71, 9,958.07 and 1,960.07

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Solution

The fourth proportional to 6,639.71, 9,958.07 and 1,960.07 is: 2,939.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,639.71 : 9,958.07 = 1,960.07 : x
  2. Step 2: Convert to fraction form
    6,639.71/9,958.07 = 1,960.07/x
  3. Step 3: Cross multiply
    6,639.71x = 9,958.07 × 1,960.07
  4. Step 4: Simplify right side
    6,639.71x = 19,518,469.37
  5. Step 5: Solve for x
    x = 19,518,469.37/6,639.71
  6. Step 6: Final answer
    x = 2,939.66

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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.