Home / 2,082.80-3,120.74-1,465.21

Finding the Fourth Proportional to 2,082.80, 3,120.74 and 1,465.21

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Solution

The fourth proportional to 2,082.80, 3,120.74 and 1,465.21 is: 2,195.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,082.80 : 3,120.74 = 1,465.21 : x
  2. Step 2: Convert to fraction form
    2,082.80/3,120.74 = 1,465.21/x
  3. Step 3: Cross multiply
    2,082.80x = 3,120.74 × 1,465.21
  4. Step 4: Simplify right side
    2,082.80x = 4,572,539.46
  5. Step 5: Solve for x
    x = 4,572,539.46/2,082.80
  6. Step 6: Final answer
    x = 2,195.38

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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.