Home / 10,255.31-15,382.86-2,859.75

Finding the Fourth Proportional to 10,255.31, 15,382.86 and 2,859.75

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Solution

The fourth proportional to 10,255.31, 15,382.86 and 2,859.75 is: 4,289.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,255.31 : 15,382.86 = 2,859.75 : x
  2. Step 2: Convert to fraction form
    10,255.31/15,382.86 = 2,859.75/x
  3. Step 3: Cross multiply
    10,255.31x = 15,382.86 × 2,859.75
  4. Step 4: Simplify right side
    10,255.31x = 43,991,133.89
  5. Step 5: Solve for x
    x = 43,991,133.89/10,255.31
  6. Step 6: Final answer
    x = 4,289.60

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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.