Home / 3,676.28-5,515.10-1,211.20

Finding the Fourth Proportional to 3,676.28, 5,515.10 and 1,211.20

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Solution

The fourth proportional to 3,676.28, 5,515.10 and 1,211.20 is: 1,817.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,676.28 : 5,515.10 = 1,211.20 : x
  2. Step 2: Convert to fraction form
    3,676.28/5,515.10 = 1,211.20/x
  3. Step 3: Cross multiply
    3,676.28x = 5,515.10 × 1,211.20
  4. Step 4: Simplify right side
    3,676.28x = 6,679,889.12
  5. Step 5: Solve for x
    x = 6,679,889.12/3,676.28
  6. Step 6: Final answer
    x = 1,817.02

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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.