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Finding the Fourth Proportional to 9,163.88, 12,646.22 and 4,972.13

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Solution

The fourth proportional to 9,163.88, 12,646.22 and 4,972.13 is: 6,861.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,163.88 : 12,646.22 = 4,972.13 : x
  2. Step 2: Convert to fraction form
    9,163.88/12,646.22 = 4,972.13/x
  3. Step 3: Cross multiply
    9,163.88x = 12,646.22 × 4,972.13
  4. Step 4: Simplify right side
    9,163.88x = 62,878,649.85
  5. Step 5: Solve for x
    x = 62,878,649.85/9,163.88
  6. Step 6: Final answer
    x = 6,861.57

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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.