Home / 9,208.05-12,691.94-6,515.79

Finding the Fourth Proportional to 9,208.05, 12,691.94 and 6,515.79

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Solution

The fourth proportional to 9,208.05, 12,691.94 and 6,515.79 is: 8,981.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,208.05 : 12,691.94 = 6,515.79 : x
  2. Step 2: Convert to fraction form
    9,208.05/12,691.94 = 6,515.79/x
  3. Step 3: Cross multiply
    9,208.05x = 12,691.94 × 6,515.79
  4. Step 4: Simplify right side
    9,208.05x = 82,697,983.15
  5. Step 5: Solve for x
    x = 82,697,983.15/9,208.05
  6. Step 6: Final answer
    x = 8,981.05

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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.