Home / 1,820.61-2,512.85-1,112.58

Finding the Fourth Proportional to 1,820.61, 2,512.85 and 1,112.58

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Solution

The fourth proportional to 1,820.61, 2,512.85 and 1,112.58 is: 1,535.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,820.61 : 2,512.85 = 1,112.58 : x
  2. Step 2: Convert to fraction form
    1,820.61/2,512.85 = 1,112.58/x
  3. Step 3: Cross multiply
    1,820.61x = 2,512.85 × 1,112.58
  4. Step 4: Simplify right side
    1,820.61x = 2,795,741.09
  5. Step 5: Solve for x
    x = 2,795,741.09/1,820.61
  6. Step 6: Final answer
    x = 1,535.61

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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.