Home / 1,631.46-2,249.54-1,189.56

Finding the Fourth Proportional to 1,631.46, 2,249.54 and 1,189.56

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Solution

The fourth proportional to 1,631.46, 2,249.54 and 1,189.56 is: 1,640.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,631.46 : 2,249.54 = 1,189.56 : x
  2. Step 2: Convert to fraction form
    1,631.46/2,249.54 = 1,189.56/x
  3. Step 3: Cross multiply
    1,631.46x = 2,249.54 × 1,189.56
  4. Step 4: Simplify right side
    1,631.46x = 2,675,962.80
  5. Step 5: Solve for x
    x = 2,675,962.80/1,631.46
  6. Step 6: Final answer
    x = 1,640.23

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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.