Home / 3,640.71-5,468.37-3,315.09

Finding the Fourth Proportional to 3,640.71, 5,468.37 and 3,315.09

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Solution

The fourth proportional to 3,640.71, 5,468.37 and 3,315.09 is: 4,979.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,640.71 : 5,468.37 = 3,315.09 : x
  2. Step 2: Convert to fraction form
    3,640.71/5,468.37 = 3,315.09/x
  3. Step 3: Cross multiply
    3,640.71x = 5,468.37 × 3,315.09
  4. Step 4: Simplify right side
    3,640.71x = 18,128,138.70
  5. Step 5: Solve for x
    x = 18,128,138.70/3,640.71
  6. Step 6: Final answer
    x = 4,979.29

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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.