Home / 5,179.19-7,138.75-3,664.80

Finding the Fourth Proportional to 5,179.19, 7,138.75 and 3,664.80

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Solution

The fourth proportional to 5,179.19, 7,138.75 and 3,664.80 is: 5,051.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,179.19 : 7,138.75 = 3,664.80 : x
  2. Step 2: Convert to fraction form
    5,179.19/7,138.75 = 3,664.80/x
  3. Step 3: Cross multiply
    5,179.19x = 7,138.75 × 3,664.80
  4. Step 4: Simplify right side
    5,179.19x = 26,162,091
  5. Step 5: Solve for x
    x = 26,162,091/5,179.19
  6. Step 6: Final answer
    x = 5,051.39

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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.