Home / 8,215.12-12,313.11-3,286.17

Finding the Fourth Proportional to 8,215.12, 12,313.11 and 3,286.17

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Solution

The fourth proportional to 8,215.12, 12,313.11 and 3,286.17 is: 4,925.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,215.12 : 12,313.11 = 3,286.17 : x
  2. Step 2: Convert to fraction form
    8,215.12/12,313.11 = 3,286.17/x
  3. Step 3: Cross multiply
    8,215.12x = 12,313.11 × 3,286.17
  4. Step 4: Simplify right side
    8,215.12x = 40,462,985.01
  5. Step 5: Solve for x
    x = 40,462,985.01/8,215.12
  6. Step 6: Final answer
    x = 4,925.43

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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.