Home / 1,722.70-2,377.32-936.75

Finding the Fourth Proportional to 1,722.70, 2,377.32 and 936.75

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Solution

The fourth proportional to 1,722.70, 2,377.32 and 936.75 is: 1,292.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,722.70 : 2,377.32 = 936.75 : x
  2. Step 2: Convert to fraction form
    1,722.70/2,377.32 = 936.75/x
  3. Step 3: Cross multiply
    1,722.70x = 2,377.32 × 936.75
  4. Step 4: Simplify right side
    1,722.70x = 2,226,942.08
  5. Step 5: Solve for x
    x = 2,226,942.08/1,722.70
  6. Step 6: Final answer
    x = 1,292.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.