Home / 3,935.52-5,430.78-2,167.02

Finding the Fourth Proportional to 3,935.52, 5,430.78 and 2,167.02

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Solution

The fourth proportional to 3,935.52, 5,430.78 and 2,167.02 is: 2,990.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,935.52 : 5,430.78 = 2,167.02 : x
  2. Step 2: Convert to fraction form
    3,935.52/5,430.78 = 2,167.02/x
  3. Step 3: Cross multiply
    3,935.52x = 5,430.78 × 2,167.02
  4. Step 4: Simplify right side
    3,935.52x = 11,768,608.88
  5. Step 5: Solve for x
    x = 11,768,608.88/3,935.52
  6. Step 6: Final answer
    x = 2,990.36

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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.