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Finding the Fourth Proportional to 3,744.78, 5,619.14 and 1,666.80

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Solution

The fourth proportional to 3,744.78, 5,619.14 and 1,666.80 is: 2,501.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,744.78 : 5,619.14 = 1,666.80 : x
  2. Step 2: Convert to fraction form
    3,744.78/5,619.14 = 1,666.80/x
  3. Step 3: Cross multiply
    3,744.78x = 5,619.14 × 1,666.80
  4. Step 4: Simplify right side
    3,744.78x = 9,365,974.22
  5. Step 5: Solve for x
    x = 9,365,974.22/3,744.78
  6. Step 6: Final answer
    x = 2,501.07

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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.