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Finding the Fourth Proportional to 2,060.78, 2,844.41 and 1,221.74

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Solution

The fourth proportional to 2,060.78, 2,844.41 and 1,221.74 is: 1,686.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,060.78 : 2,844.41 = 1,221.74 : x
  2. Step 2: Convert to fraction form
    2,060.78/2,844.41 = 1,221.74/x
  3. Step 3: Cross multiply
    2,060.78x = 2,844.41 × 1,221.74
  4. Step 4: Simplify right side
    2,060.78x = 3,475,115.25
  5. Step 5: Solve for x
    x = 3,475,115.25/2,060.78
  6. Step 6: Final answer
    x = 1,686.31

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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.