Home / 5,173.01-7,138.79-2,815.17

Finding the Fourth Proportional to 5,173.01, 7,138.79 and 2,815.17

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Solution

The fourth proportional to 5,173.01, 7,138.79 and 2,815.17 is: 3,884.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,173.01 : 7,138.79 = 2,815.17 : x
  2. Step 2: Convert to fraction form
    5,173.01/7,138.79 = 2,815.17/x
  3. Step 3: Cross multiply
    5,173.01x = 7,138.79 × 2,815.17
  4. Step 4: Simplify right side
    5,173.01x = 20,096,907.44
  5. Step 5: Solve for x
    x = 20,096,907.44/5,173.01
  6. Step 6: Final answer
    x = 3,884.95

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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.