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Finding the Fourth Proportional to 1,906.66, 2,859.18 and 1,085.32

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Solution

The fourth proportional to 1,906.66, 2,859.18 and 1,085.32 is: 1,627.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,906.66 : 2,859.18 = 1,085.32 : x
  2. Step 2: Convert to fraction form
    1,906.66/2,859.18 = 1,085.32/x
  3. Step 3: Cross multiply
    1,906.66x = 2,859.18 × 1,085.32
  4. Step 4: Simplify right side
    1,906.66x = 3,103,125.24
  5. Step 5: Solve for x
    x = 3,103,125.24/1,906.66
  6. Step 6: Final answer
    x = 1,627.52

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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.