Home / 2,015.26-2,781.08-1,131.08

Finding the Fourth Proportional to 2,015.26, 2,781.08 and 1,131.08

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Solution

The fourth proportional to 2,015.26, 2,781.08 and 1,131.08 is: 1,560.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,015.26 : 2,781.08 = 1,131.08 : x
  2. Step 2: Convert to fraction form
    2,015.26/2,781.08 = 1,131.08/x
  3. Step 3: Cross multiply
    2,015.26x = 2,781.08 × 1,131.08
  4. Step 4: Simplify right side
    2,015.26x = 3,145,623.97
  5. Step 5: Solve for x
    x = 3,145,623.97/2,015.26
  6. Step 6: Final answer
    x = 1,560.90

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1.5x scale

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.