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Finding the Fourth Proportional to 3,665.67, 5,058.61 and 1,987.07

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Solution

The fourth proportional to 3,665.67, 5,058.61 and 1,987.07 is: 2,742.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,665.67 : 5,058.61 = 1,987.07 : x
  2. Step 2: Convert to fraction form
    3,665.67/5,058.61 = 1,987.07/x
  3. Step 3: Cross multiply
    3,665.67x = 5,058.61 × 1,987.07
  4. Step 4: Simplify right side
    3,665.67x = 10,051,789.36
  5. Step 5: Solve for x
    x = 10,051,789.36/3,665.67
  6. Step 6: Final answer
    x = 2,742.14

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.