Home / 3,140.80-4,337.94-2,720.50

Finding the Fourth Proportional to 3,140.80, 4,337.94 and 2,720.50

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Solution

The fourth proportional to 3,140.80, 4,337.94 and 2,720.50 is: 3,757.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,140.80 : 4,337.94 = 2,720.50 : x
  2. Step 2: Convert to fraction form
    3,140.80/4,337.94 = 2,720.50/x
  3. Step 3: Cross multiply
    3,140.80x = 4,337.94 × 2,720.50
  4. Step 4: Simplify right side
    3,140.80x = 11,801,365.77
  5. Step 5: Solve for x
    x = 11,801,365.77/3,140.80
  6. Step 6: Final answer
    x = 3,757.44

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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.