Home / 3,971.31-5,480.16-2,202.81

Finding the Fourth Proportional to 3,971.31, 5,480.16 and 2,202.81

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Solution

The fourth proportional to 3,971.31, 5,480.16 and 2,202.81 is: 3,039.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,971.31 : 5,480.16 = 2,202.81 : x
  2. Step 2: Convert to fraction form
    3,971.31/5,480.16 = 2,202.81/x
  3. Step 3: Cross multiply
    3,971.31x = 5,480.16 × 2,202.81
  4. Step 4: Simplify right side
    3,971.31x = 12,071,751.25
  5. Step 5: Solve for x
    x = 12,071,751.25/3,971.31
  6. Step 6: Final answer
    x = 3,039.74

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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.