Home / 5,148.78-7,723.26-1,686

Finding the Fourth Proportional to 5,148.78, 7,723.26 and 1,686

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Solution

The fourth proportional to 5,148.78, 7,723.26 and 1,686 is: 2,529.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,148.78 : 7,723.26 = 1,686 : x
  2. Step 2: Convert to fraction form
    5,148.78/7,723.26 = 1,686/x
  3. Step 3: Cross multiply
    5,148.78x = 7,723.26 × 1,686
  4. Step 4: Simplify right side
    5,148.78x = 13,021,416.36
  5. Step 5: Solve for x
    x = 13,021,416.36/5,148.78
  6. Step 6: Final answer
    x = 2,529.03

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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.