Home / 7,917.26-11,878.28-3,239.13

Finding the Fourth Proportional to 7,917.26, 11,878.28 and 3,239.13

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Solution

The fourth proportional to 7,917.26, 11,878.28 and 3,239.13 is: 4,859.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,917.26 : 11,878.28 = 3,239.13 : x
  2. Step 2: Convert to fraction form
    7,917.26/11,878.28 = 3,239.13/x
  3. Step 3: Cross multiply
    7,917.26x = 11,878.28 × 3,239.13
  4. Step 4: Simplify right side
    7,917.26x = 38,475,293.10
  5. Step 5: Solve for x
    x = 38,475,293.10/7,917.26
  6. Step 6: Final answer
    x = 4,859.67

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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.