Home / 5,178.12-7,146.10-3,082.12

Finding the Fourth Proportional to 5,178.12, 7,146.10 and 3,082.12

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Solution

The fourth proportional to 5,178.12, 7,146.10 and 3,082.12 is: 4,253.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,178.12 : 7,146.10 = 3,082.12 : x
  2. Step 2: Convert to fraction form
    5,178.12/7,146.10 = 3,082.12/x
  3. Step 3: Cross multiply
    5,178.12x = 7,146.10 × 3,082.12
  4. Step 4: Simplify right side
    5,178.12x = 22,025,137.73
  5. Step 5: Solve for x
    x = 22,025,137.73/5,178.12
  6. Step 6: Final answer
    x = 4,253.50

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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.