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Finding the Fourth Proportional to 3,971.72, 5,480.38 and 2,203.32

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Solution

The fourth proportional to 3,971.72, 5,480.38 and 2,203.32 is: 3,040.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,971.72 : 5,480.38 = 2,203.32 : x
  2. Step 2: Convert to fraction form
    3,971.72/5,480.38 = 2,203.32/x
  3. Step 3: Cross multiply
    3,971.72x = 5,480.38 × 2,203.32
  4. Step 4: Simplify right side
    3,971.72x = 12,075,030.86
  5. Step 5: Solve for x
    x = 12,075,030.86/3,971.72
  6. Step 6: Final answer
    x = 3,040.25

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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.