Home / 3,782.85-5,220.39-2,104.28

Finding the Fourth Proportional to 3,782.85, 5,220.39 and 2,104.28

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Solution

The fourth proportional to 3,782.85, 5,220.39 and 2,104.28 is: 2,903.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,782.85 : 5,220.39 = 2,104.28 : x
  2. Step 2: Convert to fraction form
    3,782.85/5,220.39 = 2,104.28/x
  3. Step 3: Cross multiply
    3,782.85x = 5,220.39 × 2,104.28
  4. Step 4: Simplify right side
    3,782.85x = 10,985,136.17
  5. Step 5: Solve for x
    x = 10,985,136.17/3,782.85
  6. Step 6: Final answer
    x = 2,903.93

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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.