Home / 5,179.88-7,769.93-1,284.19

Finding the Fourth Proportional to 5,179.88, 7,769.93 and 1,284.19

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Solution

The fourth proportional to 5,179.88, 7,769.93 and 1,284.19 is: 1,926.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,179.88 : 7,769.93 = 1,284.19 : x
  2. Step 2: Convert to fraction form
    5,179.88/7,769.93 = 1,284.19/x
  3. Step 3: Cross multiply
    5,179.88x = 7,769.93 × 1,284.19
  4. Step 4: Simplify right side
    5,179.88x = 9,978,040.56
  5. Step 5: Solve for x
    x = 9,978,040.56/5,179.88
  6. Step 6: Final answer
    x = 1,926.31

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1.5x scale

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.