Home / 1,820.62-2,512.31-1,112.81

Finding the Fourth Proportional to 1,820.62, 2,512.31 and 1,112.81

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Solution

The fourth proportional to 1,820.62, 2,512.31 and 1,112.81 is: 1,535.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,820.62 : 2,512.31 = 1,112.81 : x
  2. Step 2: Convert to fraction form
    1,820.62/2,512.31 = 1,112.81/x
  3. Step 3: Cross multiply
    1,820.62x = 2,512.31 × 1,112.81
  4. Step 4: Simplify right side
    1,820.62x = 2,795,713.91
  5. Step 5: Solve for x
    x = 2,795,713.91/1,820.62
  6. Step 6: Final answer
    x = 1,535.59

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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.