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Finding the Fourth Proportional to 2,112.02, 3,167.94 and 651.32

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Solution

The fourth proportional to 2,112.02, 3,167.94 and 651.32 is: 976.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,112.02 : 3,167.94 = 651.32 : x
  2. Step 2: Convert to fraction form
    2,112.02/3,167.94 = 651.32/x
  3. Step 3: Cross multiply
    2,112.02x = 3,167.94 × 651.32
  4. Step 4: Simplify right side
    2,112.02x = 2,063,342.68
  5. Step 5: Solve for x
    x = 2,063,342.68/2,112.02
  6. Step 6: Final answer
    x = 976.95

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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.