Home / 3,105.73-4,285.56-1,779.07

Finding the Fourth Proportional to 3,105.73, 4,285.56 and 1,779.07

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Solution

The fourth proportional to 3,105.73, 4,285.56 and 1,779.07 is: 2,454.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,105.73 : 4,285.56 = 1,779.07 : x
  2. Step 2: Convert to fraction form
    3,105.73/4,285.56 = 1,779.07/x
  3. Step 3: Cross multiply
    3,105.73x = 4,285.56 × 1,779.07
  4. Step 4: Simplify right side
    3,105.73x = 7,624,311.23
  5. Step 5: Solve for x
    x = 7,624,311.23/3,105.73
  6. Step 6: Final answer
    x = 2,454.92

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Half 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.