Home / 5,145.26-7,716.70-1,447.86

Finding the Fourth Proportional to 5,145.26, 7,716.70 and 1,447.86

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Solution

The fourth proportional to 5,145.26, 7,716.70 and 1,447.86 is: 2,171.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,145.26 : 7,716.70 = 1,447.86 : x
  2. Step 2: Convert to fraction form
    5,145.26/7,716.70 = 1,447.86/x
  3. Step 3: Cross multiply
    5,145.26x = 7,716.70 × 1,447.86
  4. Step 4: Simplify right side
    5,145.26x = 11,172,701.26
  5. Step 5: Solve for x
    x = 11,172,701.26/5,145.26
  6. Step 6: Final answer
    x = 2,171.46

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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.