Home / 2,179.24-3,265.74-1,690

Finding the Fourth Proportional to 2,179.24, 3,265.74 and 1,690

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Solution

The fourth proportional to 2,179.24, 3,265.74 and 1,690 is: 2,532.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,179.24 : 3,265.74 = 1,690 : x
  2. Step 2: Convert to fraction form
    2,179.24/3,265.74 = 1,690/x
  3. Step 3: Cross multiply
    2,179.24x = 3,265.74 × 1,690
  4. Step 4: Simplify right side
    2,179.24x = 5,519,100.60
  5. Step 5: Solve for x
    x = 5,519,100.60/2,179.24
  6. Step 6: Final answer
    x = 2,532.58

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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.