Home / 2,112.41-2,913.74-1,272.54

Finding the Fourth Proportional to 2,112.41, 2,913.74 and 1,272.54

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Solution

The fourth proportional to 2,112.41, 2,913.74 and 1,272.54 is: 1,755.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,112.41 : 2,913.74 = 1,272.54 : x
  2. Step 2: Convert to fraction form
    2,112.41/2,913.74 = 1,272.54/x
  3. Step 3: Cross multiply
    2,112.41x = 2,913.74 × 1,272.54
  4. Step 4: Simplify right side
    2,112.41x = 3,707,844.34
  5. Step 5: Solve for x
    x = 3,707,844.34/2,112.41
  6. Step 6: Final answer
    x = 1,755.27

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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.