Home / 3,676.71-5,515.75-1,211.63

Finding the Fourth Proportional to 3,676.71, 5,515.75 and 1,211.63

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Solution

The fourth proportional to 3,676.71, 5,515.75 and 1,211.63 is: 1,817.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,676.71 : 5,515.75 = 1,211.63 : x
  2. Step 2: Convert to fraction form
    3,676.71/5,515.75 = 1,211.63/x
  3. Step 3: Cross multiply
    3,676.71x = 5,515.75 × 1,211.63
  4. Step 4: Simplify right side
    3,676.71x = 6,683,042.79
  5. Step 5: Solve for x
    x = 6,683,042.79/3,676.71
  6. Step 6: Final answer
    x = 1,817.67

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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.