Home / 3,858.90-5,789.70-1,669.20

Finding the Fourth Proportional to 3,858.90, 5,789.70 and 1,669.20

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Solution

The fourth proportional to 3,858.90, 5,789.70 and 1,669.20 is: 2,504.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,858.90 : 5,789.70 = 1,669.20 : x
  2. Step 2: Convert to fraction form
    3,858.90/5,789.70 = 1,669.20/x
  3. Step 3: Cross multiply
    3,858.90x = 5,789.70 × 1,669.20
  4. Step 4: Simplify right side
    3,858.90x = 9,664,167.24
  5. Step 5: Solve for x
    x = 9,664,167.24/3,858.90
  6. Step 6: Final answer
    x = 2,504.38

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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.