Home / 3,211.48-4,431.38-1,885.61

Finding the Fourth Proportional to 3,211.48, 4,431.38 and 1,885.61

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Solution

The fourth proportional to 3,211.48, 4,431.38 and 1,885.61 is: 2,601.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,211.48 : 4,431.38 = 1,885.61 : x
  2. Step 2: Convert to fraction form
    3,211.48/4,431.38 = 1,885.61/x
  3. Step 3: Cross multiply
    3,211.48x = 4,431.38 × 1,885.61
  4. Step 4: Simplify right side
    3,211.48x = 8,355,856.09
  5. Step 5: Solve for x
    x = 8,355,856.09/3,211.48
  6. Step 6: Final answer
    x = 2,601.87

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Double scale
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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.