Home / 7,213.12-10,817.51-3,879.32

Finding the Fourth Proportional to 7,213.12, 10,817.51 and 3,879.32

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Solution

The fourth proportional to 7,213.12, 10,817.51 and 3,879.32 is: 5,817.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,213.12 : 10,817.51 = 3,879.32 : x
  2. Step 2: Convert to fraction form
    7,213.12/10,817.51 = 3,879.32/x
  3. Step 3: Cross multiply
    7,213.12x = 10,817.51 × 3,879.32
  4. Step 4: Simplify right side
    7,213.12x = 41,964,509.41
  5. Step 5: Solve for x
    x = 41,964,509.41/7,213.12
  6. Step 6: Final answer
    x = 5,817.80

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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.