Home / 5,410-8,115.52-2,489.12

Finding the Fourth Proportional to 5,410, 8,115.52 and 2,489.12

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Solution

The fourth proportional to 5,410, 8,115.52 and 2,489.12 is: 3,733.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,410 : 8,115.52 = 2,489.12 : x
  2. Step 2: Convert to fraction form
    5,410/8,115.52 = 2,489.12/x
  3. Step 3: Cross multiply
    5,410x = 8,115.52 × 2,489.12
  4. Step 4: Simplify right side
    5,410x = 20,200,503.14
  5. Step 5: Solve for x
    x = 20,200,503.14/5,410
  6. Step 6: Final answer
    x = 3,733.92

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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.