Home / 1,912.04-2,638.41-1,166.20

Finding the Fourth Proportional to 1,912.04, 2,638.41 and 1,166.20

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Solution

The fourth proportional to 1,912.04, 2,638.41 and 1,166.20 is: 1,609.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,912.04 : 2,638.41 = 1,166.20 : x
  2. Step 2: Convert to fraction form
    1,912.04/2,638.41 = 1,166.20/x
  3. Step 3: Cross multiply
    1,912.04x = 2,638.41 × 1,166.20
  4. Step 4: Simplify right side
    1,912.04x = 3,076,902.77
  5. Step 5: Solve for x
    x = 3,076,902.77/1,912.04
  6. Step 6: Final answer
    x = 1,609.23

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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.