Home / 2,720.12-4,080.31-1,334.09

Finding the Fourth Proportional to 2,720.12, 4,080.31 and 1,334.09

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Solution

The fourth proportional to 2,720.12, 4,080.31 and 1,334.09 is: 2,001.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,720.12 : 4,080.31 = 1,334.09 : x
  2. Step 2: Convert to fraction form
    2,720.12/4,080.31 = 1,334.09/x
  3. Step 3: Cross multiply
    2,720.12x = 4,080.31 × 1,334.09
  4. Step 4: Simplify right side
    2,720.12x = 5,443,507.63
  5. Step 5: Solve for x
    x = 5,443,507.63/2,720.12
  6. Step 6: Final answer
    x = 2,001.20

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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.