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Finding the Fourth Proportional to 3,859.12, 5,788.01 and 1,085.14

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Solution

The fourth proportional to 3,859.12, 5,788.01 and 1,085.14 is: 1,627.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,859.12 : 5,788.01 = 1,085.14 : x
  2. Step 2: Convert to fraction form
    3,859.12/5,788.01 = 1,085.14/x
  3. Step 3: Cross multiply
    3,859.12x = 5,788.01 × 1,085.14
  4. Step 4: Simplify right side
    3,859.12x = 6,280,772.23
  5. Step 5: Solve for x
    x = 6,280,772.23/3,859.12
  6. Step 6: Final answer
    x = 1,627.51

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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.