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Finding the Fourth Proportional to 11,652.78, 17,479.26 and 3,861.66

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Solution

The fourth proportional to 11,652.78, 17,479.26 and 3,861.66 is: 5,792.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,652.78 : 17,479.26 = 3,861.66 : x
  2. Step 2: Convert to fraction form
    11,652.78/17,479.26 = 3,861.66/x
  3. Step 3: Cross multiply
    11,652.78x = 17,479.26 × 3,861.66
  4. Step 4: Simplify right side
    11,652.78x = 67,498,959.17
  5. Step 5: Solve for x
    x = 67,498,959.17/11,652.78
  6. Step 6: Final answer
    x = 5,792.52

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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.