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Finding the Fourth Proportional to 8,879.83, 12,254.75 and 5,104.21

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Solution

The fourth proportional to 8,879.83, 12,254.75 and 5,104.21 is: 7,044.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,879.83 : 12,254.75 = 5,104.21 : x
  2. Step 2: Convert to fraction form
    8,879.83/12,254.75 = 5,104.21/x
  3. Step 3: Cross multiply
    8,879.83x = 12,254.75 × 5,104.21
  4. Step 4: Simplify right side
    8,879.83x = 62,550,817.50
  5. Step 5: Solve for x
    x = 62,550,817.50/8,879.83
  6. Step 6: Final answer
    x = 7,044.15

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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.