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Finding the Fourth Proportional to 2,047.66, 2,826.48 and 1,261.78

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Solution

The fourth proportional to 2,047.66, 2,826.48 and 1,261.78 is: 1,741.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,047.66 : 2,826.48 = 1,261.78 : x
  2. Step 2: Convert to fraction form
    2,047.66/2,826.48 = 1,261.78/x
  3. Step 3: Cross multiply
    2,047.66x = 2,826.48 × 1,261.78
  4. Step 4: Simplify right side
    2,047.66x = 3,566,395.93
  5. Step 5: Solve for x
    x = 3,566,395.93/2,047.66
  6. Step 6: Final answer
    x = 1,741.69

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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.