Home / 5,403.88-8,082.78-3,318.76

Finding the Fourth Proportional to 5,403.88, 8,082.78 and 3,318.76

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Solution

The fourth proportional to 5,403.88, 8,082.78 and 3,318.76 is: 4,963.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,403.88 : 8,082.78 = 3,318.76 : x
  2. Step 2: Convert to fraction form
    5,403.88/8,082.78 = 3,318.76/x
  3. Step 3: Cross multiply
    5,403.88x = 8,082.78 × 3,318.76
  4. Step 4: Simplify right side
    5,403.88x = 26,824,806.95
  5. Step 5: Solve for x
    x = 26,824,806.95/5,403.88
  6. Step 6: Final answer
    x = 4,963.99

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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.