Home / 3,899.40-5,841.90-3,640.20

Finding the Fourth Proportional to 3,899.40, 5,841.90 and 3,640.20

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Solution

The fourth proportional to 3,899.40, 5,841.90 and 3,640.20 is: 5,453.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,899.40 : 5,841.90 = 3,640.20 : x
  2. Step 2: Convert to fraction form
    3,899.40/5,841.90 = 3,640.20/x
  3. Step 3: Cross multiply
    3,899.40x = 5,841.90 × 3,640.20
  4. Step 4: Simplify right side
    3,899.40x = 21,265,684.38
  5. Step 5: Solve for x
    x = 21,265,684.38/3,899.40
  6. Step 6: Final answer
    x = 5,453.58

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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.