Home / 3,722.31-5,580.43-1,380.80

Finding the Fourth Proportional to 3,722.31, 5,580.43 and 1,380.80

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Solution

The fourth proportional to 3,722.31, 5,580.43 and 1,380.80 is: 2,070.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,722.31 : 5,580.43 = 1,380.80 : x
  2. Step 2: Convert to fraction form
    3,722.31/5,580.43 = 1,380.80/x
  3. Step 3: Cross multiply
    3,722.31x = 5,580.43 × 1,380.80
  4. Step 4: Simplify right side
    3,722.31x = 7,705,468.24
  5. Step 5: Solve for x
    x = 7,705,468.24/3,722.31
  6. Step 6: Final answer
    x = 2,070.08

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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.