Home / 2,813.90-4,221.57-1,082.06

Finding the Fourth Proportional to 2,813.90, 4,221.57 and 1,082.06

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Solution

The fourth proportional to 2,813.90, 4,221.57 and 1,082.06 is: 1,623.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,813.90 : 4,221.57 = 1,082.06 : x
  2. Step 2: Convert to fraction form
    2,813.90/4,221.57 = 1,082.06/x
  3. Step 3: Cross multiply
    2,813.90x = 4,221.57 × 1,082.06
  4. Step 4: Simplify right side
    2,813.90x = 4,567,992.03
  5. Step 5: Solve for x
    x = 4,567,992.03/2,813.90
  6. Step 6: Final answer
    x = 1,623.37

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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.