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Finding the Fourth Proportional to 8,210.33, 12,315.68 and 2,945.69

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Solution

The fourth proportional to 8,210.33, 12,315.68 and 2,945.69 is: 4,418.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,210.33 : 12,315.68 = 2,945.69 : x
  2. Step 2: Convert to fraction form
    8,210.33/12,315.68 = 2,945.69/x
  3. Step 3: Cross multiply
    8,210.33x = 12,315.68 × 2,945.69
  4. Step 4: Simplify right side
    8,210.33x = 36,278,099.11
  5. Step 5: Solve for x
    x = 36,278,099.11/8,210.33
  6. Step 6: Final answer
    x = 4,418.59

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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.