Home / 3,211.10-4,812.60-2,862.80

Finding the Fourth Proportional to 3,211.10, 4,812.60 and 2,862.80

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Solution

The fourth proportional to 3,211.10, 4,812.60 and 2,862.80 is: 4,290.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,211.10 : 4,812.60 = 2,862.80 : x
  2. Step 2: Convert to fraction form
    3,211.10/4,812.60 = 2,862.80/x
  3. Step 3: Cross multiply
    3,211.10x = 4,812.60 × 2,862.80
  4. Step 4: Simplify right side
    3,211.10x = 13,777,511.28
  5. Step 5: Solve for x
    x = 13,777,511.28/3,211.10
  6. Step 6: Final answer
    x = 4,290.59

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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.