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Finding the Fourth Proportional to 2,076.26, 3,114.40 and 615.54

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Solution

The fourth proportional to 2,076.26, 3,114.40 and 615.54 is: 923.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,076.26 : 3,114.40 = 615.54 : x
  2. Step 2: Convert to fraction form
    2,076.26/3,114.40 = 615.54/x
  3. Step 3: Cross multiply
    2,076.26x = 3,114.40 × 615.54
  4. Step 4: Simplify right side
    2,076.26x = 1,917,037.78
  5. Step 5: Solve for x
    x = 1,917,037.78/2,076.26
  6. Step 6: Final answer
    x = 923.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.