Home / 4,243.20-6,368.40-1,906.80

Finding the Fourth Proportional to 4,243.20, 6,368.40 and 1,906.80

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Solution

The fourth proportional to 4,243.20, 6,368.40 and 1,906.80 is: 2,861.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,243.20 : 6,368.40 = 1,906.80 : x
  2. Step 2: Convert to fraction form
    4,243.20/6,368.40 = 1,906.80/x
  3. Step 3: Cross multiply
    4,243.20x = 6,368.40 × 1,906.80
  4. Step 4: Simplify right side
    4,243.20x = 12,143,265.12
  5. Step 5: Solve for x
    x = 12,143,265.12/4,243.20
  6. Step 6: Final answer
    x = 2,861.82

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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.