Home / 7,172.73-9,897.27-4,028.31

Finding the Fourth Proportional to 7,172.73, 9,897.27 and 4,028.31

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Solution

The fourth proportional to 7,172.73, 9,897.27 and 4,028.31 is: 5,558.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,172.73 : 9,897.27 = 4,028.31 : x
  2. Step 2: Convert to fraction form
    7,172.73/9,897.27 = 4,028.31/x
  3. Step 3: Cross multiply
    7,172.73x = 9,897.27 × 4,028.31
  4. Step 4: Simplify right side
    7,172.73x = 39,869,271.71
  5. Step 5: Solve for x
    x = 39,869,271.71/7,172.73
  6. Step 6: Final answer
    x = 5,558.45

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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.