Home / 8,108.75-12,147.39-5,326.98

Finding the Fourth Proportional to 8,108.75, 12,147.39 and 5,326.98

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Solution

The fourth proportional to 8,108.75, 12,147.39 and 5,326.98 is: 7,980.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,108.75 : 12,147.39 = 5,326.98 : x
  2. Step 2: Convert to fraction form
    8,108.75/12,147.39 = 5,326.98/x
  3. Step 3: Cross multiply
    8,108.75x = 12,147.39 × 5,326.98
  4. Step 4: Simplify right side
    8,108.75x = 64,708,903.58
  5. Step 5: Solve for x
    x = 64,708,903.58/8,108.75
  6. Step 6: Final answer
    x = 7,980.13

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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.