Home / 5,261.30-7,886.48-2,139.96

Finding the Fourth Proportional to 5,261.30, 7,886.48 and 2,139.96

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Solution

The fourth proportional to 5,261.30, 7,886.48 and 2,139.96 is: 3,207.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,261.30 : 7,886.48 = 2,139.96 : x
  2. Step 2: Convert to fraction form
    5,261.30/7,886.48 = 2,139.96/x
  3. Step 3: Cross multiply
    5,261.30x = 7,886.48 × 2,139.96
  4. Step 4: Simplify right side
    5,261.30x = 16,876,741.04
  5. Step 5: Solve for x
    x = 16,876,741.04/5,261.30
  6. Step 6: Final answer
    x = 3,207.72

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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.