Home / 3,211.60-4,817.40-2,693.20

Finding the Fourth Proportional to 3,211.60, 4,817.40 and 2,693.20

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Solution

The fourth proportional to 3,211.60, 4,817.40 and 2,693.20 is: 4,039.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,211.60 : 4,817.40 = 2,693.20 : x
  2. Step 2: Convert to fraction form
    3,211.60/4,817.40 = 2,693.20/x
  3. Step 3: Cross multiply
    3,211.60x = 4,817.40 × 2,693.20
  4. Step 4: Simplify right side
    3,211.60x = 12,974,221.68
  5. Step 5: Solve for x
    x = 12,974,221.68/3,211.60
  6. Step 6: Final answer
    x = 4,039.80

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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.