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Finding the Fourth Proportional to 2,076.52, 3,114.79 and 615.64

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Solution

The fourth proportional to 2,076.52, 3,114.79 and 615.64 is: 923.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,076.52 : 3,114.79 = 615.64 : x
  2. Step 2: Convert to fraction form
    2,076.52/3,114.79 = 615.64/x
  3. Step 3: Cross multiply
    2,076.52x = 3,114.79 × 615.64
  4. Step 4: Simplify right side
    2,076.52x = 1,917,589.32
  5. Step 5: Solve for x
    x = 1,917,589.32/2,076.52
  6. Step 6: Final answer
    x = 923.46

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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.