Home / 2,789.19-3,848.96-1,670.75

Finding the Fourth Proportional to 2,789.19, 3,848.96 and 1,670.75

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Solution

The fourth proportional to 2,789.19, 3,848.96 and 1,670.75 is: 2,305.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,789.19 : 3,848.96 = 1,670.75 : x
  2. Step 2: Convert to fraction form
    2,789.19/3,848.96 = 1,670.75/x
  3. Step 3: Cross multiply
    2,789.19x = 3,848.96 × 1,670.75
  4. Step 4: Simplify right side
    2,789.19x = 6,430,649.92
  5. Step 5: Solve for x
    x = 6,430,649.92/2,789.19
  6. Step 6: Final answer
    x = 2,305.56

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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.