Home / 2,015.44-2,781.28-1,131.32

Finding the Fourth Proportional to 2,015.44, 2,781.28 and 1,131.32

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Solution

The fourth proportional to 2,015.44, 2,781.28 and 1,131.32 is: 1,561.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,015.44 : 2,781.28 = 1,131.32 : x
  2. Step 2: Convert to fraction form
    2,015.44/2,781.28 = 1,131.32/x
  3. Step 3: Cross multiply
    2,015.44x = 2,781.28 × 1,131.32
  4. Step 4: Simplify right side
    2,015.44x = 3,146,517.69
  5. Step 5: Solve for x
    x = 3,146,517.69/2,015.44
  6. Step 6: Final answer
    x = 1,561.21

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Double scale
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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.