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Finding the Fourth Proportional to 5,879.91, 8,113.69 and 3,521.99

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Solution

The fourth proportional to 5,879.91, 8,113.69 and 3,521.99 is: 4,859.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,879.91 : 8,113.69 = 3,521.99 : x
  2. Step 2: Convert to fraction form
    5,879.91/8,113.69 = 3,521.99/x
  3. Step 3: Cross multiply
    5,879.91x = 8,113.69 × 3,521.99
  4. Step 4: Simplify right side
    5,879.91x = 28,576,317.43
  5. Step 5: Solve for x
    x = 28,576,317.43/5,879.91
  6. Step 6: Final answer
    x = 4,859.99

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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.