Home / 4,879.20-6,733.40-2,889

Finding the Fourth Proportional to 4,879.20, 6,733.40 and 2,889

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Solution

The fourth proportional to 4,879.20, 6,733.40 and 2,889 is: 3,986.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,879.20 : 6,733.40 = 2,889 : x
  2. Step 2: Convert to fraction form
    4,879.20/6,733.40 = 2,889/x
  3. Step 3: Cross multiply
    4,879.20x = 6,733.40 × 2,889
  4. Step 4: Simplify right side
    4,879.20x = 19,452,792.60
  5. Step 5: Solve for x
    x = 19,452,792.60/4,879.20
  6. Step 6: Final answer
    x = 3,986.88

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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.