Home / 3,291.80-4,938.42-1,211.96

Finding the Fourth Proportional to 3,291.80, 4,938.42 and 1,211.96

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Solution

The fourth proportional to 3,291.80, 4,938.42 and 1,211.96 is: 1,818.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,291.80 : 4,938.42 = 1,211.96 : x
  2. Step 2: Convert to fraction form
    3,291.80/4,938.42 = 1,211.96/x
  3. Step 3: Cross multiply
    3,291.80x = 4,938.42 × 1,211.96
  4. Step 4: Simplify right side
    3,291.80x = 5,985,142.81
  5. Step 5: Solve for x
    x = 5,985,142.81/3,291.80
  6. Step 6: Final answer
    x = 1,818.20

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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.