Home / 3,172.96-4,379.23-2,180.51

Finding the Fourth Proportional to 3,172.96, 4,379.23 and 2,180.51

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Solution

The fourth proportional to 3,172.96, 4,379.23 and 2,180.51 is: 3,009.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,172.96 : 4,379.23 = 2,180.51 : x
  2. Step 2: Convert to fraction form
    3,172.96/4,379.23 = 2,180.51/x
  3. Step 3: Cross multiply
    3,172.96x = 4,379.23 × 2,180.51
  4. Step 4: Simplify right side
    3,172.96x = 9,548,954.81
  5. Step 5: Solve for x
    x = 9,548,954.81/3,172.96
  6. Step 6: Final answer
    x = 3,009.48

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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.