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Finding the Fourth Proportional to 2,166.39, 3,249.56 and 522.93

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Solution

The fourth proportional to 2,166.39, 3,249.56 and 522.93 is: 784.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,166.39 : 3,249.56 = 522.93 : x
  2. Step 2: Convert to fraction form
    2,166.39/3,249.56 = 522.93/x
  3. Step 3: Cross multiply
    2,166.39x = 3,249.56 × 522.93
  4. Step 4: Simplify right side
    2,166.39x = 1,699,292.41
  5. Step 5: Solve for x
    x = 1,699,292.41/2,166.39
  6. Step 6: Final answer
    x = 784.39

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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.