Home / 5,410.38-8,115.87-2,639.42

Finding the Fourth Proportional to 5,410.38, 8,115.87 and 2,639.42

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Solution

The fourth proportional to 5,410.38, 8,115.87 and 2,639.42 is: 3,959.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,410.38 : 8,115.87 = 2,639.42 : x
  2. Step 2: Convert to fraction form
    5,410.38/8,115.87 = 2,639.42/x
  3. Step 3: Cross multiply
    5,410.38x = 8,115.87 × 2,639.42
  4. Step 4: Simplify right side
    5,410.38x = 21,421,149.02
  5. Step 5: Solve for x
    x = 21,421,149.02/5,410.38
  6. Step 6: Final answer
    x = 3,959.27

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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.