Home / 1,722.20-2,376.60-936.24

Finding the Fourth Proportional to 1,722.20, 2,376.60 and 936.24

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Solution

The fourth proportional to 1,722.20, 2,376.60 and 936.24 is: 1,291.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,722.20 : 2,376.60 = 936.24 : x
  2. Step 2: Convert to fraction form
    1,722.20/2,376.60 = 936.24/x
  3. Step 3: Cross multiply
    1,722.20x = 2,376.60 × 936.24
  4. Step 4: Simplify right side
    1,722.20x = 2,225,067.98
  5. Step 5: Solve for x
    x = 2,225,067.98/1,722.20
  6. Step 6: Final answer
    x = 1,291.99

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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.