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Finding the Fourth Proportional to 1,665.85, 2,500.98 and 1,336.97

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Solution

The fourth proportional to 1,665.85, 2,500.98 and 1,336.97 is: 2,007.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,665.85 : 2,500.98 = 1,336.97 : x
  2. Step 2: Convert to fraction form
    1,665.85/2,500.98 = 1,336.97/x
  3. Step 3: Cross multiply
    1,665.85x = 2,500.98 × 1,336.97
  4. Step 4: Simplify right side
    1,665.85x = 3,343,735.23
  5. Step 5: Solve for x
    x = 3,343,735.23/1,665.85
  6. Step 6: Final answer
    x = 2,007.22

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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.