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Finding the Fourth Proportional to 3,665.79, 5,499.15 and 1,199.95

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Solution

The fourth proportional to 3,665.79, 5,499.15 and 1,199.95 is: 1,800.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,665.79 : 5,499.15 = 1,199.95 : x
  2. Step 2: Convert to fraction form
    3,665.79/5,499.15 = 1,199.95/x
  3. Step 3: Cross multiply
    3,665.79x = 5,499.15 × 1,199.95
  4. Step 4: Simplify right side
    3,665.79x = 6,598,686.79
  5. Step 5: Solve for x
    x = 6,598,686.79/3,665.79
  6. Step 6: Final answer
    x = 1,800.07

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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.