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Finding the Fourth Proportional to 2,167.09, 3,250.79 and 607.21

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Solution

The fourth proportional to 2,167.09, 3,250.79 and 607.21 is: 910.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,167.09 : 3,250.79 = 607.21 : x
  2. Step 2: Convert to fraction form
    2,167.09/3,250.79 = 607.21/x
  3. Step 3: Cross multiply
    2,167.09x = 3,250.79 × 607.21
  4. Step 4: Simplify right side
    2,167.09x = 1,973,924.23
  5. Step 5: Solve for x
    x = 1,973,924.23/2,167.09
  6. Step 6: Final answer
    x = 910.86

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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.