Home / 5,418.91-8,128.65-1,523.62

Finding the Fourth Proportional to 5,418.91, 8,128.65 and 1,523.62

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Solution

The fourth proportional to 5,418.91, 8,128.65 and 1,523.62 is: 2,285.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,418.91 : 8,128.65 = 1,523.62 : x
  2. Step 2: Convert to fraction form
    5,418.91/8,128.65 = 1,523.62/x
  3. Step 3: Cross multiply
    5,418.91x = 8,128.65 × 1,523.62
  4. Step 4: Simplify right side
    5,418.91x = 12,384,973.71
  5. Step 5: Solve for x
    x = 12,384,973.71/5,418.91
  6. Step 6: Final answer
    x = 2,285.51

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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.