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Finding the Fourth Proportional to 11,578.72, 15,978.60 and 6,273.66

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Solution

The fourth proportional to 11,578.72, 15,978.60 and 6,273.66 is: 8,657.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,578.72 : 15,978.60 = 6,273.66 : x
  2. Step 2: Convert to fraction form
    11,578.72/15,978.60 = 6,273.66/x
  3. Step 3: Cross multiply
    11,578.72x = 15,978.60 × 6,273.66
  4. Step 4: Simplify right side
    11,578.72x = 100,244,303.68
  5. Step 5: Solve for x
    x = 100,244,303.68/11,578.72
  6. Step 6: Final answer
    x = 8,657.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.