Home / 8,187.88-11,299.31-4,651.28

Finding the Fourth Proportional to 8,187.88, 11,299.31 and 4,651.28

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Solution

The fourth proportional to 8,187.88, 11,299.31 and 4,651.28 is: 6,418.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,187.88 : 11,299.31 = 4,651.28 : x
  2. Step 2: Convert to fraction form
    8,187.88/11,299.31 = 4,651.28/x
  3. Step 3: Cross multiply
    8,187.88x = 11,299.31 × 4,651.28
  4. Step 4: Simplify right side
    8,187.88x = 52,556,277.05
  5. Step 5: Solve for x
    x = 52,556,277.05/8,187.88
  6. Step 6: Final answer
    x = 6,418.79

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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.