Home / 5,808.15-8,706.78-2,109.45

Finding the Fourth Proportional to 5,808.15, 8,706.78 and 2,109.45

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Solution

The fourth proportional to 5,808.15, 8,706.78 and 2,109.45 is: 3,162.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,808.15 : 8,706.78 = 2,109.45 : x
  2. Step 2: Convert to fraction form
    5,808.15/8,706.78 = 2,109.45/x
  3. Step 3: Cross multiply
    5,808.15x = 8,706.78 × 2,109.45
  4. Step 4: Simplify right side
    5,808.15x = 18,366,517.07
  5. Step 5: Solve for x
    x = 18,366,517.07/5,808.15
  6. Step 6: Final answer
    x = 3,162.20

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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.