Home / 1,684.33-2,320.01-1,311.28

Finding the Fourth Proportional to 1,684.33, 2,320.01 and 1,311.28

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Solution

The fourth proportional to 1,684.33, 2,320.01 and 1,311.28 is: 1,806.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,684.33 : 2,320.01 = 1,311.28 : x
  2. Step 2: Convert to fraction form
    1,684.33/2,320.01 = 1,311.28/x
  3. Step 3: Cross multiply
    1,684.33x = 2,320.01 × 1,311.28
  4. Step 4: Simplify right side
    1,684.33x = 3,042,175.27
  5. Step 5: Solve for x
    x = 3,042,175.27/1,684.33
  6. Step 6: Final answer
    x = 1,806.17

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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.