Home / 3,790.40-5,669.60-3,403.20

Finding the Fourth Proportional to 3,790.40, 5,669.60 and 3,403.20

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Solution

The fourth proportional to 3,790.40, 5,669.60 and 3,403.20 is: 5,090.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,790.40 : 5,669.60 = 3,403.20 : x
  2. Step 2: Convert to fraction form
    3,790.40/5,669.60 = 3,403.20/x
  3. Step 3: Cross multiply
    3,790.40x = 5,669.60 × 3,403.20
  4. Step 4: Simplify right side
    3,790.40x = 19,294,782.72
  5. Step 5: Solve for x
    x = 19,294,782.72/3,790.40
  6. Step 6: Final answer
    x = 5,090.43

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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.