Home / 2,133.43-2,943.84-1,189.11

Finding the Fourth Proportional to 2,133.43, 2,943.84 and 1,189.11

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Solution

The fourth proportional to 2,133.43, 2,943.84 and 1,189.11 is: 1,640.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,133.43 : 2,943.84 = 1,189.11 : x
  2. Step 2: Convert to fraction form
    2,133.43/2,943.84 = 1,189.11/x
  3. Step 3: Cross multiply
    2,133.43x = 2,943.84 × 1,189.11
  4. Step 4: Simplify right side
    2,133.43x = 3,500,532.72
  5. Step 5: Solve for x
    x = 3,500,532.72/2,133.43
  6. Step 6: Final answer
    x = 1,640.80

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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.