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Finding the Fourth Proportional to 3,720.06, 5,578.65 and 1,086.68

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Solution

The fourth proportional to 3,720.06, 5,578.65 and 1,086.68 is: 1,629.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,720.06 : 5,578.65 = 1,086.68 : x
  2. Step 2: Convert to fraction form
    3,720.06/5,578.65 = 1,086.68/x
  3. Step 3: Cross multiply
    3,720.06x = 5,578.65 × 1,086.68
  4. Step 4: Simplify right side
    3,720.06x = 6,062,221.33
  5. Step 5: Solve for x
    x = 6,062,221.33/3,720.06
  6. Step 6: Final answer
    x = 1,629.60

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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.