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Finding the Fourth Proportional to 3,859.28, 5,788.82 and 1,085.98

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Solution

The fourth proportional to 3,859.28, 5,788.82 and 1,085.98 is: 1,628.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,859.28 : 5,788.82 = 1,085.98 : x
  2. Step 2: Convert to fraction form
    3,859.28/5,788.82 = 1,085.98/x
  3. Step 3: Cross multiply
    3,859.28x = 5,788.82 × 1,085.98
  4. Step 4: Simplify right side
    3,859.28x = 6,286,542.74
  5. Step 5: Solve for x
    x = 6,286,542.74/3,859.28
  6. Step 6: Final answer
    x = 1,628.94

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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.