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Finding the Fourth Proportional to 1,674.70, 2,517.60 and 1,666.60

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Solution

The fourth proportional to 1,674.70, 2,517.60 and 1,666.60 is: 2,505.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,674.70 : 2,517.60 = 1,666.60 : x
  2. Step 2: Convert to fraction form
    1,674.70/2,517.60 = 1,666.60/x
  3. Step 3: Cross multiply
    1,674.70x = 2,517.60 × 1,666.60
  4. Step 4: Simplify right side
    1,674.70x = 4,195,832.16
  5. Step 5: Solve for x
    x = 4,195,832.16/1,674.70
  6. Step 6: Final answer
    x = 2,505.42

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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.