Home / 5,261.30-7,891.98-2,141.36

Finding the Fourth Proportional to 5,261.30, 7,891.98 and 2,141.36

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Solution

The fourth proportional to 5,261.30, 7,891.98 and 2,141.36 is: 3,212.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,261.30 : 7,891.98 = 2,141.36 : x
  2. Step 2: Convert to fraction form
    5,261.30/7,891.98 = 2,141.36/x
  3. Step 3: Cross multiply
    5,261.30x = 7,891.98 × 2,141.36
  4. Step 4: Simplify right side
    5,261.30x = 16,899,570.29
  5. Step 5: Solve for x
    x = 16,899,570.29/5,261.30
  6. Step 6: Final answer
    x = 3,212.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.