Home / 2,847.28-3,928.68-1,798.80

Finding the Fourth Proportional to 2,847.28, 3,928.68 and 1,798.80

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Solution

The fourth proportional to 2,847.28, 3,928.68 and 1,798.80 is: 2,481.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,847.28 : 3,928.68 = 1,798.80 : x
  2. Step 2: Convert to fraction form
    2,847.28/3,928.68 = 1,798.80/x
  3. Step 3: Cross multiply
    2,847.28x = 3,928.68 × 1,798.80
  4. Step 4: Simplify right side
    2,847.28x = 7,066,909.58
  5. Step 5: Solve for x
    x = 7,066,909.58/2,847.28
  6. Step 6: Final answer
    x = 2,481.99

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.