Home / 7,172.50-9,898.05-4,028.69

Finding the Fourth Proportional to 7,172.50, 9,898.05 and 4,028.69

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Solution

The fourth proportional to 7,172.50, 9,898.05 and 4,028.69 is: 5,559.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,172.50 : 9,898.05 = 4,028.69 : x
  2. Step 2: Convert to fraction form
    7,172.50/9,898.05 = 4,028.69/x
  3. Step 3: Cross multiply
    7,172.50x = 9,898.05 × 4,028.69
  4. Step 4: Simplify right side
    7,172.50x = 39,876,175.05
  5. Step 5: Solve for x
    x = 39,876,175.05/7,172.50
  6. Step 6: Final answer
    x = 5,559.59

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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.