Home / 3,172.49-4,379.56-2,112.02

Finding the Fourth Proportional to 3,172.49, 4,379.56 and 2,112.02

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Solution

The fourth proportional to 3,172.49, 4,379.56 and 2,112.02 is: 2,915.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,172.49 : 4,379.56 = 2,112.02 : x
  2. Step 2: Convert to fraction form
    3,172.49/4,379.56 = 2,112.02/x
  3. Step 3: Cross multiply
    3,172.49x = 4,379.56 × 2,112.02
  4. Step 4: Simplify right side
    3,172.49x = 9,249,723.98
  5. Step 5: Solve for x
    x = 9,249,723.98/3,172.49
  6. Step 6: Final answer
    x = 2,915.60

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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.