Home / 10,611.54-15,917.76-3,215.79

Finding the Fourth Proportional to 10,611.54, 15,917.76 and 3,215.79

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Solution

The fourth proportional to 10,611.54, 15,917.76 and 3,215.79 is: 4,823.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,611.54 : 15,917.76 = 3,215.79 : x
  2. Step 2: Convert to fraction form
    10,611.54/15,917.76 = 3,215.79/x
  3. Step 3: Cross multiply
    10,611.54x = 15,917.76 × 3,215.79
  4. Step 4: Simplify right side
    10,611.54x = 51,188,173.43
  5. Step 5: Solve for x
    x = 51,188,173.43/10,611.54
  6. Step 6: Final answer
    x = 4,823.82

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1.5x scale

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.