Home / 2,070.85-3,111.26-1,331.88

Finding the Fourth Proportional to 2,070.85, 3,111.26 and 1,331.88

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Solution

The fourth proportional to 2,070.85, 3,111.26 and 1,331.88 is: 2,001.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,070.85 : 3,111.26 = 1,331.88 : x
  2. Step 2: Convert to fraction form
    2,070.85/3,111.26 = 1,331.88/x
  3. Step 3: Cross multiply
    2,070.85x = 3,111.26 × 1,331.88
  4. Step 4: Simplify right side
    2,070.85x = 4,143,824.97
  5. Step 5: Solve for x
    x = 4,143,824.97/2,070.85
  6. Step 6: Final answer
    x = 2,001.03

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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.