Home / 2,686.70-4,028.16-1,223.84

Finding the Fourth Proportional to 2,686.70, 4,028.16 and 1,223.84

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Solution

The fourth proportional to 2,686.70, 4,028.16 and 1,223.84 is: 1,834.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,686.70 : 4,028.16 = 1,223.84 : x
  2. Step 2: Convert to fraction form
    2,686.70/4,028.16 = 1,223.84/x
  3. Step 3: Cross multiply
    2,686.70x = 4,028.16 × 1,223.84
  4. Step 4: Simplify right side
    2,686.70x = 4,929,823.33
  5. Step 5: Solve for x
    x = 4,929,823.33/2,686.70
  6. Step 6: Final answer
    x = 1,834.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.