Home / 2,145.25-3,188.94-2,082.19

Finding the Fourth Proportional to 2,145.25, 3,188.94 and 2,082.19

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Solution

The fourth proportional to 2,145.25, 3,188.94 and 2,082.19 is: 3,095.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,145.25 : 3,188.94 = 2,082.19 : x
  2. Step 2: Convert to fraction form
    2,145.25/3,188.94 = 2,082.19/x
  3. Step 3: Cross multiply
    2,145.25x = 3,188.94 × 2,082.19
  4. Step 4: Simplify right side
    2,145.25x = 6,639,986.75
  5. Step 5: Solve for x
    x = 6,639,986.75/2,145.25
  6. Step 6: Final answer
    x = 3,095.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.