Home / 2,122.30-3,183.45-1,182.70

Finding the Fourth Proportional to 2,122.30, 3,183.45 and 1,182.70

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Solution

The fourth proportional to 2,122.30, 3,183.45 and 1,182.70 is: 1,774.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,122.30 : 3,183.45 = 1,182.70 : x
  2. Step 2: Convert to fraction form
    2,122.30/3,183.45 = 1,182.70/x
  3. Step 3: Cross multiply
    2,122.30x = 3,183.45 × 1,182.70
  4. Step 4: Simplify right side
    2,122.30x = 3,765,066.32
  5. Step 5: Solve for x
    x = 3,765,066.32/2,122.30
  6. Step 6: Final answer
    x = 1,774.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.