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Finding the Fourth Proportional to 5,105.22, 7,045.22 and 2,867.12

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Solution

The fourth proportional to 5,105.22, 7,045.22 and 2,867.12 is: 3,956.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,105.22 : 7,045.22 = 2,867.12 : x
  2. Step 2: Convert to fraction form
    5,105.22/7,045.22 = 2,867.12/x
  3. Step 3: Cross multiply
    5,105.22x = 7,045.22 × 2,867.12
  4. Step 4: Simplify right side
    5,105.22x = 20,199,491.17
  5. Step 5: Solve for x
    x = 20,199,491.17/5,105.22
  6. Step 6: Final answer
    x = 3,956.63

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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.