Home / 9,176.22-12,655.98-8,115.12

Finding the Fourth Proportional to 9,176.22, 12,655.98 and 8,115.12

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Solution

The fourth proportional to 9,176.22, 12,655.98 and 8,115.12 is: 11,192.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,176.22 : 12,655.98 = 8,115.12 : x
  2. Step 2: Convert to fraction form
    9,176.22/12,655.98 = 8,115.12/x
  3. Step 3: Cross multiply
    9,176.22x = 12,655.98 × 8,115.12
  4. Step 4: Simplify right side
    9,176.22x = 102,704,796.42
  5. Step 5: Solve for x
    x = 102,704,796.42/9,176.22
  6. Step 6: Final answer
    x = 11,192.49

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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.