Home / 3,971.63-5,480.79-2,203.20

Finding the Fourth Proportional to 3,971.63, 5,480.79 and 2,203.20

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Solution

The fourth proportional to 3,971.63, 5,480.79 and 2,203.20 is: 3,040.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,971.63 : 5,480.79 = 2,203.20 : x
  2. Step 2: Convert to fraction form
    3,971.63/5,480.79 = 2,203.20/x
  3. Step 3: Cross multiply
    3,971.63x = 5,480.79 × 2,203.20
  4. Step 4: Simplify right side
    3,971.63x = 12,075,268.27
  5. Step 5: Solve for x
    x = 12,075,268.27/3,971.63
  6. Step 6: Final answer
    x = 3,040.38

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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.