Home / 5,920.81-8,879.32-3,145.91

Finding the Fourth Proportional to 5,920.81, 8,879.32 and 3,145.91

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Solution

The fourth proportional to 5,920.81, 8,879.32 and 3,145.91 is: 4,717.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,920.81 : 8,879.32 = 3,145.91 : x
  2. Step 2: Convert to fraction form
    5,920.81/8,879.32 = 3,145.91/x
  3. Step 3: Cross multiply
    5,920.81x = 8,879.32 × 3,145.91
  4. Step 4: Simplify right side
    5,920.81x = 27,933,501.12
  5. Step 5: Solve for x
    x = 27,933,501.12/5,920.81
  6. Step 6: Final answer
    x = 4,717.85

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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.