Home / 2,813.89-4,221.44-1,082.50

Finding the Fourth Proportional to 2,813.89, 4,221.44 and 1,082.50

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Solution

The fourth proportional to 2,813.89, 4,221.44 and 1,082.50 is: 1,623.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,813.89 : 4,221.44 = 1,082.50 : x
  2. Step 2: Convert to fraction form
    2,813.89/4,221.44 = 1,082.50/x
  3. Step 3: Cross multiply
    2,813.89x = 4,221.44 × 1,082.50
  4. Step 4: Simplify right side
    2,813.89x = 4,569,708.80
  5. Step 5: Solve for x
    x = 4,569,708.80/2,813.89
  6. Step 6: Final answer
    x = 1,623.98

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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.