Home / 7,172.28-9,897.66-4,029

Finding the Fourth Proportional to 7,172.28, 9,897.66 and 4,029

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Solution

The fourth proportional to 7,172.28, 9,897.66 and 4,029 is: 5,559.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,172.28 : 9,897.66 = 4,029 : x
  2. Step 2: Convert to fraction form
    7,172.28/9,897.66 = 4,029/x
  3. Step 3: Cross multiply
    7,172.28x = 9,897.66 × 4,029
  4. Step 4: Simplify right side
    7,172.28x = 39,877,672.14
  5. Step 5: Solve for x
    x = 39,877,672.14/7,172.28
  6. Step 6: Final answer
    x = 5,559.97

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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.