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Finding the Fourth Proportional to 9,163.64, 12,648.87 and 6,518.72

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Solution

The fourth proportional to 9,163.64, 12,648.87 and 6,518.72 is: 8,998.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,163.64 : 12,648.87 = 6,518.72 : x
  2. Step 2: Convert to fraction form
    9,163.64/12,648.87 = 6,518.72/x
  3. Step 3: Cross multiply
    9,163.64x = 12,648.87 × 6,518.72
  4. Step 4: Simplify right side
    9,163.64x = 82,454,441.85
  5. Step 5: Solve for x
    x = 82,454,441.85/9,163.64
  6. Step 6: Final answer
    x = 8,998.00

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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.