Home / 1,722.67-2,377.29-936.72

Finding the Fourth Proportional to 1,722.67, 2,377.29 and 936.72

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Solution

The fourth proportional to 1,722.67, 2,377.29 and 936.72 is: 1,292.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,722.67 : 2,377.29 = 936.72 : x
  2. Step 2: Convert to fraction form
    1,722.67/2,377.29 = 936.72/x
  3. Step 3: Cross multiply
    1,722.67x = 2,377.29 × 936.72
  4. Step 4: Simplify right side
    1,722.67x = 2,226,855.09
  5. Step 5: Solve for x
    x = 2,226,855.09/1,722.67
  6. Step 6: Final answer
    x = 1,292.68

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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.