Home / 3,219.09-4,443.71-2,172.57

Finding the Fourth Proportional to 3,219.09, 4,443.71 and 2,172.57

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Solution

The fourth proportional to 3,219.09, 4,443.71 and 2,172.57 is: 2,999.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,219.09 : 4,443.71 = 2,172.57 : x
  2. Step 2: Convert to fraction form
    3,219.09/4,443.71 = 2,172.57/x
  3. Step 3: Cross multiply
    3,219.09x = 4,443.71 × 2,172.57
  4. Step 4: Simplify right side
    3,219.09x = 9,654,260.17
  5. Step 5: Solve for x
    x = 9,654,260.17/3,219.09
  6. Step 6: Final answer
    x = 2,999.07

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1.5x scale

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.