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Finding the Fourth Proportional to 5,309.32, 7,961.40 and 1,610.88

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Solution

The fourth proportional to 5,309.32, 7,961.40 and 1,610.88 is: 2,415.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,309.32 : 7,961.40 = 1,610.88 : x
  2. Step 2: Convert to fraction form
    5,309.32/7,961.40 = 1,610.88/x
  3. Step 3: Cross multiply
    5,309.32x = 7,961.40 × 1,610.88
  4. Step 4: Simplify right side
    5,309.32x = 12,824,860.03
  5. Step 5: Solve for x
    x = 12,824,860.03/5,309.32
  6. Step 6: Final answer
    x = 2,415.54

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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.