Home / 1,722.32-2,376.80-936.38

Finding the Fourth Proportional to 1,722.32, 2,376.80 and 936.38

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Solution

The fourth proportional to 1,722.32, 2,376.80 and 936.38 is: 1,292.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,722.32 : 2,376.80 = 936.38 : x
  2. Step 2: Convert to fraction form
    1,722.32/2,376.80 = 936.38/x
  3. Step 3: Cross multiply
    1,722.32x = 2,376.80 × 936.38
  4. Step 4: Simplify right side
    1,722.32x = 2,225,587.98
  5. Step 5: Solve for x
    x = 2,225,587.98/1,722.32
  6. Step 6: Final answer
    x = 1,292.20

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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.