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Finding the Fourth Proportional to 5,600.79, 7,728.78 and 3,082.50

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Solution

The fourth proportional to 5,600.79, 7,728.78 and 3,082.50 is: 4,253.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,600.79 : 7,728.78 = 3,082.50 : x
  2. Step 2: Convert to fraction form
    5,600.79/7,728.78 = 3,082.50/x
  3. Step 3: Cross multiply
    5,600.79x = 7,728.78 × 3,082.50
  4. Step 4: Simplify right side
    5,600.79x = 23,823,964.35
  5. Step 5: Solve for x
    x = 23,823,964.35/5,600.79
  6. Step 6: Final answer
    x = 4,253.68

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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.