Home / 3,211.70-4,423.28-2,769.44

Finding the Fourth Proportional to 3,211.70, 4,423.28 and 2,769.44

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Solution

The fourth proportional to 3,211.70, 4,423.28 and 2,769.44 is: 3,814.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,211.70 : 4,423.28 = 2,769.44 : x
  2. Step 2: Convert to fraction form
    3,211.70/4,423.28 = 2,769.44/x
  3. Step 3: Cross multiply
    3,211.70x = 4,423.28 × 2,769.44
  4. Step 4: Simplify right side
    3,211.70x = 12,249,972.60
  5. Step 5: Solve for x
    x = 12,249,972.60/3,211.70
  6. Step 6: Final answer
    x = 3,814.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.