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Finding the Fourth Proportional to 2,626.43, 3,939.69 and 652.07

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Solution

The fourth proportional to 2,626.43, 3,939.69 and 652.07 is: 978.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,626.43 : 3,939.69 = 652.07 : x
  2. Step 2: Convert to fraction form
    2,626.43/3,939.69 = 652.07/x
  3. Step 3: Cross multiply
    2,626.43x = 3,939.69 × 652.07
  4. Step 4: Simplify right side
    2,626.43x = 2,568,930.70
  5. Step 5: Solve for x
    x = 2,568,930.70/2,626.43
  6. Step 6: Final answer
    x = 978.11

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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.