Home / 9,163.22-12,642.33-5,385.17

Finding the Fourth Proportional to 9,163.22, 12,642.33 and 5,385.17

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Solution

The fourth proportional to 9,163.22, 12,642.33 and 5,385.17 is: 7,429.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,163.22 : 12,642.33 = 5,385.17 : x
  2. Step 2: Convert to fraction form
    9,163.22/12,642.33 = 5,385.17/x
  3. Step 3: Cross multiply
    9,163.22x = 12,642.33 × 5,385.17
  4. Step 4: Simplify right side
    9,163.22x = 68,081,127.85
  5. Step 5: Solve for x
    x = 68,081,127.85/9,163.22
  6. Step 6: Final answer
    x = 7,429.83

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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.