Home / 3,969.40-5,475.34-2,625.01

Finding the Fourth Proportional to 3,969.40, 5,475.34 and 2,625.01

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Solution

The fourth proportional to 3,969.40, 5,475.34 and 2,625.01 is: 3,620.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,969.40 : 5,475.34 = 2,625.01 : x
  2. Step 2: Convert to fraction form
    3,969.40/5,475.34 = 2,625.01/x
  3. Step 3: Cross multiply
    3,969.40x = 5,475.34 × 2,625.01
  4. Step 4: Simplify right side
    3,969.40x = 14,372,822.25
  5. Step 5: Solve for x
    x = 14,372,822.25/3,969.40
  6. Step 6: Final answer
    x = 3,620.91

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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.