Home / 5,198.46-7,798.64-1,911.21

Finding the Fourth Proportional to 5,198.46, 7,798.64 and 1,911.21

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Solution

The fourth proportional to 5,198.46, 7,798.64 and 1,911.21 is: 2,867.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,198.46 : 7,798.64 = 1,911.21 : x
  2. Step 2: Convert to fraction form
    5,198.46/7,798.64 = 1,911.21/x
  3. Step 3: Cross multiply
    5,198.46x = 7,798.64 × 1,911.21
  4. Step 4: Simplify right side
    5,198.46x = 14,904,829.20
  5. Step 5: Solve for x
    x = 14,904,829.20/5,198.46
  6. Step 6: Final answer
    x = 2,867.16

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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.