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Finding the Fourth Proportional to 8,961.45, 12,352.41 and 7,069.83

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Solution

The fourth proportional to 8,961.45, 12,352.41 and 7,069.83 is: 9,745.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,961.45 : 12,352.41 = 7,069.83 : x
  2. Step 2: Convert to fraction form
    8,961.45/12,352.41 = 7,069.83/x
  3. Step 3: Cross multiply
    8,961.45x = 12,352.41 × 7,069.83
  4. Step 4: Simplify right side
    8,961.45x = 87,329,438.79
  5. Step 5: Solve for x
    x = 87,329,438.79/8,961.45
  6. Step 6: Final answer
    x = 9,745.01

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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.