Home / 1,861.28-2,789.48-1,202.96

Finding the Fourth Proportional to 1,861.28, 2,789.48 and 1,202.96

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Solution

The fourth proportional to 1,861.28, 2,789.48 and 1,202.96 is: 1,802.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,861.28 : 2,789.48 = 1,202.96 : x
  2. Step 2: Convert to fraction form
    1,861.28/2,789.48 = 1,202.96/x
  3. Step 3: Cross multiply
    1,861.28x = 2,789.48 × 1,202.96
  4. Step 4: Simplify right side
    1,861.28x = 3,355,632.86
  5. Step 5: Solve for x
    x = 3,355,632.86/1,861.28
  6. Step 6: Final answer
    x = 1,802.86

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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.