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Finding the Fourth Proportional to 2,137.52, 2,950 and 1,206.32

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Solution

The fourth proportional to 2,137.52, 2,950 and 1,206.32 is: 1,664.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,137.52 : 2,950 = 1,206.32 : x
  2. Step 2: Convert to fraction form
    2,137.52/2,950 = 1,206.32/x
  3. Step 3: Cross multiply
    2,137.52x = 2,950 × 1,206.32
  4. Step 4: Simplify right side
    2,137.52x = 3,558,644
  5. Step 5: Solve for x
    x = 3,558,644/2,137.52
  6. Step 6: Final answer
    x = 1,664.85

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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.