Home / 3,242.64-4,474.08-2,405.28

Finding the Fourth Proportional to 3,242.64, 4,474.08 and 2,405.28

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Solution

The fourth proportional to 3,242.64, 4,474.08 and 2,405.28 is: 3,318.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,242.64 : 4,474.08 = 2,405.28 : x
  2. Step 2: Convert to fraction form
    3,242.64/4,474.08 = 2,405.28/x
  3. Step 3: Cross multiply
    3,242.64x = 4,474.08 × 2,405.28
  4. Step 4: Simplify right side
    3,242.64x = 10,761,415.14
  5. Step 5: Solve for x
    x = 10,761,415.14/3,242.64
  6. Step 6: Final answer
    x = 3,318.72

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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.