Home / 7,171.88-9,897.30-4,028.36

Finding the Fourth Proportional to 7,171.88, 9,897.30 and 4,028.36

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Solution

The fourth proportional to 7,171.88, 9,897.30 and 4,028.36 is: 5,559.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,171.88 : 9,897.30 = 4,028.36 : x
  2. Step 2: Convert to fraction form
    7,171.88/9,897.30 = 4,028.36/x
  3. Step 3: Cross multiply
    7,171.88x = 9,897.30 × 4,028.36
  4. Step 4: Simplify right side
    7,171.88x = 39,869,887.43
  5. Step 5: Solve for x
    x = 39,869,887.43/7,171.88
  6. Step 6: Final answer
    x = 5,559.20

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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.