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Finding the Fourth Proportional to 8,310.69, 12,465.81 and 3,379.08

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Solution

The fourth proportional to 8,310.69, 12,465.81 and 3,379.08 is: 5,068.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,310.69 : 12,465.81 = 3,379.08 : x
  2. Step 2: Convert to fraction form
    8,310.69/12,465.81 = 3,379.08/x
  3. Step 3: Cross multiply
    8,310.69x = 12,465.81 × 3,379.08
  4. Step 4: Simplify right side
    8,310.69x = 42,122,969.25
  5. Step 5: Solve for x
    x = 42,122,969.25/8,310.69
  6. Step 6: Final answer
    x = 5,068.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.