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Finding the Fourth Proportional to 4,879.77, 6,733.62 and 2,889.60

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Solution

The fourth proportional to 4,879.77, 6,733.62 and 2,889.60 is: 3,987.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,879.77 : 6,733.62 = 2,889.60 : x
  2. Step 2: Convert to fraction form
    4,879.77/6,733.62 = 2,889.60/x
  3. Step 3: Cross multiply
    4,879.77x = 6,733.62 × 2,889.60
  4. Step 4: Simplify right side
    4,879.77x = 19,457,468.35
  5. Step 5: Solve for x
    x = 19,457,468.35/4,879.77
  6. Step 6: Final answer
    x = 3,987.37

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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.