Home / 5,143.30-7,097.22-2,905.20

Finding the Fourth Proportional to 5,143.30, 7,097.22 and 2,905.20

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Solution

The fourth proportional to 5,143.30, 7,097.22 and 2,905.20 is: 4,008.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,143.30 : 7,097.22 = 2,905.20 : x
  2. Step 2: Convert to fraction form
    5,143.30/7,097.22 = 2,905.20/x
  3. Step 3: Cross multiply
    5,143.30x = 7,097.22 × 2,905.20
  4. Step 4: Simplify right side
    5,143.30x = 20,618,843.54
  5. Step 5: Solve for x
    x = 20,618,843.54/5,143.30
  6. Step 6: Final answer
    x = 4,008.88

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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.