Home / 7,172.28-9,897.90-4,028.52

Finding the Fourth Proportional to 7,172.28, 9,897.90 and 4,028.52

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Solution

The fourth proportional to 7,172.28, 9,897.90 and 4,028.52 is: 5,559.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,172.28 : 9,897.90 = 4,028.52 : x
  2. Step 2: Convert to fraction form
    7,172.28/9,897.90 = 4,028.52/x
  3. Step 3: Cross multiply
    7,172.28x = 9,897.90 × 4,028.52
  4. Step 4: Simplify right side
    7,172.28x = 39,873,888.11
  5. Step 5: Solve for x
    x = 39,873,888.11/7,172.28
  6. Step 6: Final answer
    x = 5,559.44

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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.