Home / 5,105.22-7,652.37-2,639.40

Finding the Fourth Proportional to 5,105.22, 7,652.37 and 2,639.40

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Solution

The fourth proportional to 5,105.22, 7,652.37 and 2,639.40 is: 3,956.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,105.22 : 7,652.37 = 2,639.40 : x
  2. Step 2: Convert to fraction form
    5,105.22/7,652.37 = 2,639.40/x
  3. Step 3: Cross multiply
    5,105.22x = 7,652.37 × 2,639.40
  4. Step 4: Simplify right side
    5,105.22x = 20,197,665.38
  5. Step 5: Solve for x
    x = 20,197,665.38/5,105.22
  6. Step 6: Final answer
    x = 3,956.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.