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Finding the Fourth Proportional to 7,879.53, 10,874.25 and 4,342.74

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Solution

The fourth proportional to 7,879.53, 10,874.25 and 4,342.74 is: 5,993.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,879.53 : 10,874.25 = 4,342.74 : x
  2. Step 2: Convert to fraction form
    7,879.53/10,874.25 = 4,342.74/x
  3. Step 3: Cross multiply
    7,879.53x = 10,874.25 × 4,342.74
  4. Step 4: Simplify right side
    7,879.53x = 47,224,040.45
  5. Step 5: Solve for x
    x = 47,224,040.45/7,879.53
  6. Step 6: Final answer
    x = 5,993.26

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.