Home / 3,105.30-4,285.53-1,926.75

Finding the Fourth Proportional to 3,105.30, 4,285.53 and 1,926.75

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Solution

The fourth proportional to 3,105.30, 4,285.53 and 1,926.75 is: 2,659.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,105.30 : 4,285.53 = 1,926.75 : x
  2. Step 2: Convert to fraction form
    3,105.30/4,285.53 = 1,926.75/x
  3. Step 3: Cross multiply
    3,105.30x = 4,285.53 × 1,926.75
  4. Step 4: Simplify right side
    3,105.30x = 8,257,144.93
  5. Step 5: Solve for x
    x = 8,257,144.93/3,105.30
  6. Step 6: Final answer
    x = 2,659.05

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Half scale
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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.