Home / 5,418.66-8,128.71-1,523.10

Finding the Fourth Proportional to 5,418.66, 8,128.71 and 1,523.10

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Solution

The fourth proportional to 5,418.66, 8,128.71 and 1,523.10 is: 2,284.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,418.66 : 8,128.71 = 1,523.10 : x
  2. Step 2: Convert to fraction form
    5,418.66/8,128.71 = 1,523.10/x
  3. Step 3: Cross multiply
    5,418.66x = 8,128.71 × 1,523.10
  4. Step 4: Simplify right side
    5,418.66x = 12,380,838.20
  5. Step 5: Solve for x
    x = 12,380,838.20/5,418.66
  6. Step 6: Final answer
    x = 2,284.85

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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.