Home / 1,682.16-2,321.28-936.07

Finding the Fourth Proportional to 1,682.16, 2,321.28 and 936.07

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Solution

The fourth proportional to 1,682.16, 2,321.28 and 936.07 is: 1,291.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,682.16 : 2,321.28 = 936.07 : x
  2. Step 2: Convert to fraction form
    1,682.16/2,321.28 = 936.07/x
  3. Step 3: Cross multiply
    1,682.16x = 2,321.28 × 936.07
  4. Step 4: Simplify right side
    1,682.16x = 2,172,880.57
  5. Step 5: Solve for x
    x = 2,172,880.57/1,682.16
  6. Step 6: Final answer
    x = 1,291.72

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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.