Home / 1,912.84-2,639.72-1,166.76

Finding the Fourth Proportional to 1,912.84, 2,639.72 and 1,166.76

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Solution

The fourth proportional to 1,912.84, 2,639.72 and 1,166.76 is: 1,610.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,912.84 : 2,639.72 = 1,166.76 : x
  2. Step 2: Convert to fraction form
    1,912.84/2,639.72 = 1,166.76/x
  3. Step 3: Cross multiply
    1,912.84x = 2,639.72 × 1,166.76
  4. Step 4: Simplify right side
    1,912.84x = 3,079,922.62
  5. Step 5: Solve for x
    x = 3,079,922.62/1,912.84
  6. Step 6: Final answer
    x = 1,610.13

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1.5x scale

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.