Home / 3,186.74-4,779.03-1,211.90

Finding the Fourth Proportional to 3,186.74, 4,779.03 and 1,211.90

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Solution

The fourth proportional to 3,186.74, 4,779.03 and 1,211.90 is: 1,817.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,186.74 : 4,779.03 = 1,211.90 : x
  2. Step 2: Convert to fraction form
    3,186.74/4,779.03 = 1,211.90/x
  3. Step 3: Cross multiply
    3,186.74x = 4,779.03 × 1,211.90
  4. Step 4: Simplify right side
    3,186.74x = 5,791,706.46
  5. Step 5: Solve for x
    x = 5,791,706.46/3,186.74
  6. Step 6: Final answer
    x = 1,817.44

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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.