Home / 2,720.24-4,078.20-1,333.52

Finding the Fourth Proportional to 2,720.24, 4,078.20 and 1,333.52

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Solution

The fourth proportional to 2,720.24, 4,078.20 and 1,333.52 is: 1,999.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,720.24 : 4,078.20 = 1,333.52 : x
  2. Step 2: Convert to fraction form
    2,720.24/4,078.20 = 1,333.52/x
  3. Step 3: Cross multiply
    2,720.24x = 4,078.20 × 1,333.52
  4. Step 4: Simplify right side
    2,720.24x = 5,438,361.26
  5. Step 5: Solve for x
    x = 5,438,361.26/2,720.24
  6. Step 6: Final answer
    x = 1,999.22

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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.