Home / 7,138.36-10,710.60-3,678.04

Finding the Fourth Proportional to 7,138.36, 10,710.60 and 3,678.04

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Solution

The fourth proportional to 7,138.36, 10,710.60 and 3,678.04 is: 5,518.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,138.36 : 10,710.60 = 3,678.04 : x
  2. Step 2: Convert to fraction form
    7,138.36/10,710.60 = 3,678.04/x
  3. Step 3: Cross multiply
    7,138.36x = 10,710.60 × 3,678.04
  4. Step 4: Simplify right side
    7,138.36x = 39,394,015.22
  5. Step 5: Solve for x
    x = 39,394,015.22/7,138.36
  6. Step 6: Final answer
    x = 5,518.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.