Home / 2,015.26-2,781.18-1,131.22

Finding the Fourth Proportional to 2,015.26, 2,781.18 and 1,131.22

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Solution

The fourth proportional to 2,015.26, 2,781.18 and 1,131.22 is: 1,561.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,015.26 : 2,781.18 = 1,131.22 : x
  2. Step 2: Convert to fraction form
    2,015.26/2,781.18 = 1,131.22/x
  3. Step 3: Cross multiply
    2,015.26x = 2,781.18 × 1,131.22
  4. Step 4: Simplify right side
    2,015.26x = 3,146,126.44
  5. Step 5: Solve for x
    x = 3,146,126.44/2,015.26
  6. Step 6: Final answer
    x = 1,561.15

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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.