Home / 5,418.65-8,128.26-1,523.36

Finding the Fourth Proportional to 5,418.65, 8,128.26 and 1,523.36

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Solution

The fourth proportional to 5,418.65, 8,128.26 and 1,523.36 is: 2,285.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,418.65 : 8,128.26 = 1,523.36 : x
  2. Step 2: Convert to fraction form
    5,418.65/8,128.26 = 1,523.36/x
  3. Step 3: Cross multiply
    5,418.65x = 8,128.26 × 1,523.36
  4. Step 4: Simplify right side
    5,418.65x = 12,382,286.47
  5. Step 5: Solve for x
    x = 12,382,286.47/5,418.65
  6. Step 6: Final answer
    x = 2,285.12

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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.