Home / 5,119.14-7,678.34-1,370.64

Finding the Fourth Proportional to 5,119.14, 7,678.34 and 1,370.64

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Solution

The fourth proportional to 5,119.14, 7,678.34 and 1,370.64 is: 2,055.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,119.14 : 7,678.34 = 1,370.64 : x
  2. Step 2: Convert to fraction form
    5,119.14/7,678.34 = 1,370.64/x
  3. Step 3: Cross multiply
    5,119.14x = 7,678.34 × 1,370.64
  4. Step 4: Simplify right side
    5,119.14x = 10,524,239.94
  5. Step 5: Solve for x
    x = 10,524,239.94/5,119.14
  6. Step 6: Final answer
    x = 2,055.86

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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.