Home / 8,149.12-11,218.08-7,152.64

Finding the Fourth Proportional to 8,149.12, 11,218.08 and 7,152.64

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Solution

The fourth proportional to 8,149.12, 11,218.08 and 7,152.64 is: 9,846.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,149.12 : 11,218.08 = 7,152.64 : x
  2. Step 2: Convert to fraction form
    8,149.12/11,218.08 = 7,152.64/x
  3. Step 3: Cross multiply
    8,149.12x = 11,218.08 × 7,152.64
  4. Step 4: Simplify right side
    8,149.12x = 80,238,887.73
  5. Step 5: Solve for x
    x = 80,238,887.73/8,149.12
  6. Step 6: Final answer
    x = 9,846.33

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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.