Home / 3,679.20-5,518.92-1,082.40

Finding the Fourth Proportional to 3,679.20, 5,518.92 and 1,082.40

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Solution

The fourth proportional to 3,679.20, 5,518.92 and 1,082.40 is: 1,623.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,679.20 : 5,518.92 = 1,082.40 : x
  2. Step 2: Convert to fraction form
    3,679.20/5,518.92 = 1,082.40/x
  3. Step 3: Cross multiply
    3,679.20x = 5,518.92 × 1,082.40
  4. Step 4: Simplify right side
    3,679.20x = 5,973,679.01
  5. Step 5: Solve for x
    x = 5,973,679.01/3,679.20
  6. Step 6: Final answer
    x = 1,623.64

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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.