Home / 7,129.26-9,838.60-3,985.44

Finding the Fourth Proportional to 7,129.26, 9,838.60 and 3,985.44

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Solution

The fourth proportional to 7,129.26, 9,838.60 and 3,985.44 is: 5,500.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,129.26 : 9,838.60 = 3,985.44 : x
  2. Step 2: Convert to fraction form
    7,129.26/9,838.60 = 3,985.44/x
  3. Step 3: Cross multiply
    7,129.26x = 9,838.60 × 3,985.44
  4. Step 4: Simplify right side
    7,129.26x = 39,211,149.98
  5. Step 5: Solve for x
    x = 39,211,149.98/7,129.26
  6. Step 6: Final answer
    x = 5,500.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.