Home / 2,288.99-3,158.87-1,380.75

Finding the Fourth Proportional to 2,288.99, 3,158.87 and 1,380.75

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Solution

The fourth proportional to 2,288.99, 3,158.87 and 1,380.75 is: 1,905.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,288.99 : 3,158.87 = 1,380.75 : x
  2. Step 2: Convert to fraction form
    2,288.99/3,158.87 = 1,380.75/x
  3. Step 3: Cross multiply
    2,288.99x = 3,158.87 × 1,380.75
  4. Step 4: Simplify right side
    2,288.99x = 4,361,609.75
  5. Step 5: Solve for x
    x = 4,361,609.75/2,288.99
  6. Step 6: Final answer
    x = 1,905.47

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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.