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Finding the Fourth Proportional to 3,676.71, 5,515.35 and 1,079.64

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Solution

The fourth proportional to 3,676.71, 5,515.35 and 1,079.64 is: 1,619.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,676.71 : 5,515.35 = 1,079.64 : x
  2. Step 2: Convert to fraction form
    3,676.71/5,515.35 = 1,079.64/x
  3. Step 3: Cross multiply
    3,676.71x = 5,515.35 × 1,079.64
  4. Step 4: Simplify right side
    3,676.71x = 5,954,592.47
  5. Step 5: Solve for x
    x = 5,954,592.47/3,676.71
  6. Step 6: Final answer
    x = 1,619.54

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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.