Home / 3,935.31-5,430.97-2,166.88

Finding the Fourth Proportional to 3,935.31, 5,430.97 and 2,166.88

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Solution

The fourth proportional to 3,935.31, 5,430.97 and 2,166.88 is: 2,990.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,935.31 : 5,430.97 = 2,166.88 : x
  2. Step 2: Convert to fraction form
    3,935.31/5,430.97 = 2,166.88/x
  3. Step 3: Cross multiply
    3,935.31x = 5,430.97 × 2,166.88
  4. Step 4: Simplify right side
    3,935.31x = 11,768,260.27
  5. Step 5: Solve for x
    x = 11,768,260.27/3,935.31
  6. Step 6: Final answer
    x = 2,990.43

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1.5x scale

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.