Home / 1,722.80-2,377.45-936.85

Finding the Fourth Proportional to 1,722.80, 2,377.45 and 936.85

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Solution

The fourth proportional to 1,722.80, 2,377.45 and 936.85 is: 1,292.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,722.80 : 2,377.45 = 936.85 : x
  2. Step 2: Convert to fraction form
    1,722.80/2,377.45 = 936.85/x
  3. Step 3: Cross multiply
    1,722.80x = 2,377.45 × 936.85
  4. Step 4: Simplify right side
    1,722.80x = 2,227,311.69
  5. Step 5: Solve for x
    x = 2,227,311.69/1,722.80
  6. Step 6: Final answer
    x = 1,292.85

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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.