Home / 1,618.11-2,232.09-1,121.04

Finding the Fourth Proportional to 1,618.11, 2,232.09 and 1,121.04

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Solution

The fourth proportional to 1,618.11, 2,232.09 and 1,121.04 is: 1,546.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,618.11 : 2,232.09 = 1,121.04 : x
  2. Step 2: Convert to fraction form
    1,618.11/2,232.09 = 1,121.04/x
  3. Step 3: Cross multiply
    1,618.11x = 2,232.09 × 1,121.04
  4. Step 4: Simplify right side
    1,618.11x = 2,502,262.17
  5. Step 5: Solve for x
    x = 2,502,262.17/1,618.11
  6. Step 6: Final answer
    x = 1,546.41

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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.