Home / 2,082.28-2,875.19-1,286.75

Finding the Fourth Proportional to 2,082.28, 2,875.19 and 1,286.75

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Solution

The fourth proportional to 2,082.28, 2,875.19 and 1,286.75 is: 1,776.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,082.28 : 2,875.19 = 1,286.75 : x
  2. Step 2: Convert to fraction form
    2,082.28/2,875.19 = 1,286.75/x
  3. Step 3: Cross multiply
    2,082.28x = 2,875.19 × 1,286.75
  4. Step 4: Simplify right side
    2,082.28x = 3,699,661.14
  5. Step 5: Solve for x
    x = 3,699,661.14/2,082.28
  6. Step 6: Final answer
    x = 1,776.74

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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.