Home / 2,640.66-3,644.16-1,579.52

Finding the Fourth Proportional to 2,640.66, 3,644.16 and 1,579.52

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Solution

The fourth proportional to 2,640.66, 3,644.16 and 1,579.52 is: 2,179.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,640.66 : 3,644.16 = 1,579.52 : x
  2. Step 2: Convert to fraction form
    2,640.66/3,644.16 = 1,579.52/x
  3. Step 3: Cross multiply
    2,640.66x = 3,644.16 × 1,579.52
  4. Step 4: Simplify right side
    2,640.66x = 5,756,023.60
  5. Step 5: Solve for x
    x = 5,756,023.60/2,640.66
  6. Step 6: Final answer
    x = 2,179.77

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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.