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Finding the Fourth Proportional to 1,721.39, 2,582.15 and 796.70

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Solution

The fourth proportional to 1,721.39, 2,582.15 and 796.70 is: 1,195.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,721.39 : 2,582.15 = 796.70 : x
  2. Step 2: Convert to fraction form
    1,721.39/2,582.15 = 796.70/x
  3. Step 3: Cross multiply
    1,721.39x = 2,582.15 × 796.70
  4. Step 4: Simplify right side
    1,721.39x = 2,057,201.38
  5. Step 5: Solve for x
    x = 2,057,201.38/1,721.39
  6. Step 6: Final answer
    x = 1,195.08

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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.