Home / 2,015.28-2,781.21-1,131.14

Finding the Fourth Proportional to 2,015.28, 2,781.21 and 1,131.14

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Solution

The fourth proportional to 2,015.28, 2,781.21 and 1,131.14 is: 1,561.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,015.28 : 2,781.21 = 1,131.14 : x
  2. Step 2: Convert to fraction form
    2,015.28/2,781.21 = 1,131.14/x
  3. Step 3: Cross multiply
    2,015.28x = 2,781.21 × 1,131.14
  4. Step 4: Simplify right side
    2,015.28x = 3,145,937.88
  5. Step 5: Solve for x
    x = 3,145,937.88/2,015.28
  6. Step 6: Final answer
    x = 1,561.04

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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.