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Finding the Fourth Proportional to 5,806.89, 8,710.20 and 2,107.69

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Solution

The fourth proportional to 5,806.89, 8,710.20 and 2,107.69 is: 3,161.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,806.89 : 8,710.20 = 2,107.69 : x
  2. Step 2: Convert to fraction form
    5,806.89/8,710.20 = 2,107.69/x
  3. Step 3: Cross multiply
    5,806.89x = 8,710.20 × 2,107.69
  4. Step 4: Simplify right side
    5,806.89x = 18,358,379.66
  5. Step 5: Solve for x
    x = 18,358,379.66/5,806.89
  6. Step 6: Final answer
    x = 3,161.48

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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.