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Finding the Fourth Proportional to 8,745.81, 12,069.55 and 4,969.62

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Solution

The fourth proportional to 8,745.81, 12,069.55 and 4,969.62 is: 6,858.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,745.81 : 12,069.55 = 4,969.62 : x
  2. Step 2: Convert to fraction form
    8,745.81/12,069.55 = 4,969.62/x
  3. Step 3: Cross multiply
    8,745.81x = 12,069.55 × 4,969.62
  4. Step 4: Simplify right side
    8,745.81x = 59,981,021.38
  5. Step 5: Solve for x
    x = 59,981,021.38/8,745.81
  6. Step 6: Final answer
    x = 6,858.26

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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.