Home / 3,640.09-5,022.71-2,148.30

Finding the Fourth Proportional to 3,640.09, 5,022.71 and 2,148.30

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Solution

The fourth proportional to 3,640.09, 5,022.71 and 2,148.30 is: 2,964.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,640.09 : 5,022.71 = 2,148.30 : x
  2. Step 2: Convert to fraction form
    3,640.09/5,022.71 = 2,148.30/x
  3. Step 3: Cross multiply
    3,640.09x = 5,022.71 × 2,148.30
  4. Step 4: Simplify right side
    3,640.09x = 10,790,271.08
  5. Step 5: Solve for x
    x = 10,790,271.08/3,640.09
  6. Step 6: Final answer
    x = 2,964.29

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1.5x scale

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.