Home / 1,722.08-2,376.37-936.12

Finding the Fourth Proportional to 1,722.08, 2,376.37 and 936.12

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Solution

The fourth proportional to 1,722.08, 2,376.37 and 936.12 is: 1,291.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,722.08 : 2,376.37 = 936.12 : x
  2. Step 2: Convert to fraction form
    1,722.08/2,376.37 = 936.12/x
  3. Step 3: Cross multiply
    1,722.08x = 2,376.37 × 936.12
  4. Step 4: Simplify right side
    1,722.08x = 2,224,567.48
  5. Step 5: Solve for x
    x = 2,224,567.48/1,722.08
  6. Step 6: Final answer
    x = 1,291.79

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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.