Home / 1,722.17-2,376.62-936.21

Finding the Fourth Proportional to 1,722.17, 2,376.62 and 936.21

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Solution

The fourth proportional to 1,722.17, 2,376.62 and 936.21 is: 1,291.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,722.17 : 2,376.62 = 936.21 : x
  2. Step 2: Convert to fraction form
    1,722.17/2,376.62 = 936.21/x
  3. Step 3: Cross multiply
    1,722.17x = 2,376.62 × 936.21
  4. Step 4: Simplify right side
    1,722.17x = 2,225,010.73
  5. Step 5: Solve for x
    x = 2,225,010.73/1,722.17
  6. Step 6: Final answer
    x = 1,291.98

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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.