Home / 3,931.66-5,425.71-2,439.02

Finding the Fourth Proportional to 3,931.66, 5,425.71 and 2,439.02

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Solution

The fourth proportional to 3,931.66, 5,425.71 and 2,439.02 is: 3,365.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,931.66 : 5,425.71 = 2,439.02 : x
  2. Step 2: Convert to fraction form
    3,931.66/5,425.71 = 2,439.02/x
  3. Step 3: Cross multiply
    3,931.66x = 5,425.71 × 2,439.02
  4. Step 4: Simplify right side
    3,931.66x = 13,233,415.20
  5. Step 5: Solve for x
    x = 13,233,415.20/3,931.66
  6. Step 6: Final answer
    x = 3,365.86

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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.