Home / 3,969.20-5,474.76-2,395.28

Finding the Fourth Proportional to 3,969.20, 5,474.76 and 2,395.28

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Solution

The fourth proportional to 3,969.20, 5,474.76 and 2,395.28 is: 3,303.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,969.20 : 5,474.76 = 2,395.28 : x
  2. Step 2: Convert to fraction form
    3,969.20/5,474.76 = 2,395.28/x
  3. Step 3: Cross multiply
    3,969.20x = 5,474.76 × 2,395.28
  4. Step 4: Simplify right side
    3,969.20x = 13,113,583.13
  5. Step 5: Solve for x
    x = 13,113,583.13/3,969.20
  6. Step 6: Final answer
    x = 3,303.84

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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.