Home / 3,211.85-4,817.21-1,021.07

Finding the Fourth Proportional to 3,211.85, 4,817.21 and 1,021.07

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Solution

The fourth proportional to 3,211.85, 4,817.21 and 1,021.07 is: 1,531.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,211.85 : 4,817.21 = 1,021.07 : x
  2. Step 2: Convert to fraction form
    3,211.85/4,817.21 = 1,021.07/x
  3. Step 3: Cross multiply
    3,211.85x = 4,817.21 × 1,021.07
  4. Step 4: Simplify right side
    3,211.85x = 4,918,715.55
  5. Step 5: Solve for x
    x = 4,918,715.55/3,211.85
  6. Step 6: Final answer
    x = 1,531.43

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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.