Home / 1,912.51-2,639.14-1,166.86

Finding the Fourth Proportional to 1,912.51, 2,639.14 and 1,166.86

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Solution

The fourth proportional to 1,912.51, 2,639.14 and 1,166.86 is: 1,610.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,912.51 : 2,639.14 = 1,166.86 : x
  2. Step 2: Convert to fraction form
    1,912.51/2,639.14 = 1,166.86/x
  3. Step 3: Cross multiply
    1,912.51x = 2,639.14 × 1,166.86
  4. Step 4: Simplify right side
    1,912.51x = 3,079,506.90
  5. Step 5: Solve for x
    x = 3,079,506.90/1,912.51
  6. Step 6: Final answer
    x = 1,610.19

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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.