Home / 2,809.05-4,216.71-1,640.43

Finding the Fourth Proportional to 2,809.05, 4,216.71 and 1,640.43

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Solution

The fourth proportional to 2,809.05, 4,216.71 and 1,640.43 is: 2,462.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,809.05 : 4,216.71 = 1,640.43 : x
  2. Step 2: Convert to fraction form
    2,809.05/4,216.71 = 1,640.43/x
  3. Step 3: Cross multiply
    2,809.05x = 4,216.71 × 1,640.43
  4. Step 4: Simplify right side
    2,809.05x = 6,917,217.59
  5. Step 5: Solve for x
    x = 6,917,217.59/2,809.05
  6. Step 6: Final answer
    x = 2,462.48

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1.5x scale

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.