Home / 1,912.66-2,638.84-1,166.35

Finding the Fourth Proportional to 1,912.66, 2,638.84 and 1,166.35

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Solution

The fourth proportional to 1,912.66, 2,638.84 and 1,166.35 is: 1,609.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,912.66 : 2,638.84 = 1,166.35 : x
  2. Step 2: Convert to fraction form
    1,912.66/2,638.84 = 1,166.35/x
  3. Step 3: Cross multiply
    1,912.66x = 2,638.84 × 1,166.35
  4. Step 4: Simplify right side
    1,912.66x = 3,077,792.01
  5. Step 5: Solve for x
    x = 3,077,792.01/1,912.66
  6. Step 6: Final answer
    x = 1,609.17

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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.