Home / 2,808.09-4,228.58-2,082.78

Finding the Fourth Proportional to 2,808.09, 4,228.58 and 2,082.78

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Solution

The fourth proportional to 2,808.09, 4,228.58 and 2,082.78 is: 3,136.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,808.09 : 4,228.58 = 2,082.78 : x
  2. Step 2: Convert to fraction form
    2,808.09/4,228.58 = 2,082.78/x
  3. Step 3: Cross multiply
    2,808.09x = 4,228.58 × 2,082.78
  4. Step 4: Simplify right side
    2,808.09x = 8,807,207.06
  5. Step 5: Solve for x
    x = 8,807,207.06/2,808.09
  6. Step 6: Final answer
    x = 3,136.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.