Home / 8,147.68-11,245.09-4,791.31

Finding the Fourth Proportional to 8,147.68, 11,245.09 and 4,791.31

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Solution

The fourth proportional to 8,147.68, 11,245.09 and 4,791.31 is: 6,612.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,147.68 : 11,245.09 = 4,791.31 : x
  2. Step 2: Convert to fraction form
    8,147.68/11,245.09 = 4,791.31/x
  3. Step 3: Cross multiply
    8,147.68x = 11,245.09 × 4,791.31
  4. Step 4: Simplify right side
    8,147.68x = 53,878,712.17
  5. Step 5: Solve for x
    x = 53,878,712.17/8,147.68
  6. Step 6: Final answer
    x = 6,612.77

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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.