Home / 9,418.72-12,997.40-5,226.88

Finding the Fourth Proportional to 9,418.72, 12,997.40 and 5,226.88

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Solution

The fourth proportional to 9,418.72, 12,997.40 and 5,226.88 is: 7,212.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,418.72 : 12,997.40 = 5,226.88 : x
  2. Step 2: Convert to fraction form
    9,418.72/12,997.40 = 5,226.88/x
  3. Step 3: Cross multiply
    9,418.72x = 12,997.40 × 5,226.88
  4. Step 4: Simplify right side
    9,418.72x = 67,935,850.11
  5. Step 5: Solve for x
    x = 67,935,850.11/9,418.72
  6. Step 6: Final answer
    x = 7,212.85

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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.