Home / 2,015.62-2,781.57-1,119.39

Finding the Fourth Proportional to 2,015.62, 2,781.57 and 1,119.39

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Solution

The fourth proportional to 2,015.62, 2,781.57 and 1,119.39 is: 1,544.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,015.62 : 2,781.57 = 1,119.39 : x
  2. Step 2: Convert to fraction form
    2,015.62/2,781.57 = 1,119.39/x
  3. Step 3: Cross multiply
    2,015.62x = 2,781.57 × 1,119.39
  4. Step 4: Simplify right side
    2,015.62x = 3,113,661.64
  5. Step 5: Solve for x
    x = 3,113,661.64/2,015.62
  6. Step 6: Final answer
    x = 1,544.77

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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.