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Finding the Fourth Proportional to 8,879.21, 12,252.83 and 5,101.77

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Solution

The fourth proportional to 8,879.21, 12,252.83 and 5,101.77 is: 7,040.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,879.21 : 12,252.83 = 5,101.77 : x
  2. Step 2: Convert to fraction form
    8,879.21/12,252.83 = 5,101.77/x
  3. Step 3: Cross multiply
    8,879.21x = 12,252.83 × 5,101.77
  4. Step 4: Simplify right side
    8,879.21x = 62,511,120.51
  5. Step 5: Solve for x
    x = 62,511,120.51/8,879.21
  6. Step 6: Final answer
    x = 7,040.17

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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.