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Finding the Fourth Proportional to 2,626.71, 3,939.39 and 983.22

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Solution

The fourth proportional to 2,626.71, 3,939.39 and 983.22 is: 1,474.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,626.71 : 3,939.39 = 983.22 : x
  2. Step 2: Convert to fraction form
    2,626.71/3,939.39 = 983.22/x
  3. Step 3: Cross multiply
    2,626.71x = 3,939.39 × 983.22
  4. Step 4: Simplify right side
    2,626.71x = 3,873,287.04
  5. Step 5: Solve for x
    x = 3,873,287.04/2,626.71
  6. Step 6: Final answer
    x = 1,474.58

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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.