Home / 4,879.70-6,733.56-2,889.90

Finding the Fourth Proportional to 4,879.70, 6,733.56 and 2,889.90

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Solution

The fourth proportional to 4,879.70, 6,733.56 and 2,889.90 is: 3,987.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,879.70 : 6,733.56 = 2,889.90 : x
  2. Step 2: Convert to fraction form
    4,879.70/6,733.56 = 2,889.90/x
  3. Step 3: Cross multiply
    4,879.70x = 6,733.56 × 2,889.90
  4. Step 4: Simplify right side
    4,879.70x = 19,459,315.04
  5. Step 5: Solve for x
    x = 19,459,315.04/4,879.70
  6. Step 6: Final answer
    x = 3,987.81

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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.