Home / 5,147.43-7,721.88-1,589.86

Finding the Fourth Proportional to 5,147.43, 7,721.88 and 1,589.86

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Solution

The fourth proportional to 5,147.43, 7,721.88 and 1,589.86 is: 2,385.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,147.43 : 7,721.88 = 1,589.86 : x
  2. Step 2: Convert to fraction form
    5,147.43/7,721.88 = 1,589.86/x
  3. Step 3: Cross multiply
    5,147.43x = 7,721.88 × 1,589.86
  4. Step 4: Simplify right side
    5,147.43x = 12,276,720.77
  5. Step 5: Solve for x
    x = 12,276,720.77/5,147.43
  6. Step 6: Final answer
    x = 2,385.02

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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.