Home / 1,912.10-2,638.68-1,166.01

Finding the Fourth Proportional to 1,912.10, 2,638.68 and 1,166.01

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Solution

The fourth proportional to 1,912.10, 2,638.68 and 1,166.01 is: 1,609.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,912.10 : 2,638.68 = 1,166.01 : x
  2. Step 2: Convert to fraction form
    1,912.10/2,638.68 = 1,166.01/x
  3. Step 3: Cross multiply
    1,912.10x = 2,638.68 × 1,166.01
  4. Step 4: Simplify right side
    1,912.10x = 3,076,727.27
  5. Step 5: Solve for x
    x = 3,076,727.27/1,912.10
  6. Step 6: Final answer
    x = 1,609.09

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Why These Related Problems?

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