Home / 2,305.86-3,182.14-1,421.62

Finding the Fourth Proportional to 2,305.86, 3,182.14 and 1,421.62

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Solution

The fourth proportional to 2,305.86, 3,182.14 and 1,421.62 is: 1,961.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,305.86 : 3,182.14 = 1,421.62 : x
  2. Step 2: Convert to fraction form
    2,305.86/3,182.14 = 1,421.62/x
  3. Step 3: Cross multiply
    2,305.86x = 3,182.14 × 1,421.62
  4. Step 4: Simplify right side
    2,305.86x = 4,523,793.87
  5. Step 5: Solve for x
    x = 4,523,793.87/2,305.86
  6. Step 6: Final answer
    x = 1,961.87

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Half scale
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Double scale
Find fourth proportional to 2,306.86, 3,183.52 and 1,422.62
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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.