Home / 3,909.12-5,861.61-1,716.81

Finding the Fourth Proportional to 3,909.12, 5,861.61 and 1,716.81

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Solution

The fourth proportional to 3,909.12, 5,861.61 and 1,716.81 is: 2,574.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,909.12 : 5,861.61 = 1,716.81 : x
  2. Step 2: Convert to fraction form
    3,909.12/5,861.61 = 1,716.81/x
  3. Step 3: Cross multiply
    3,909.12x = 5,861.61 × 1,716.81
  4. Step 4: Simplify right side
    3,909.12x = 10,063,270.66
  5. Step 5: Solve for x
    x = 10,063,270.66/3,909.12
  6. Step 6: Final answer
    x = 2,574.31

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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.