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Finding the Fourth Proportional to 8,879.13, 13,317.03 and 3,612.87

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Solution

The fourth proportional to 8,879.13, 13,317.03 and 3,612.87 is: 5,418.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,879.13 : 13,317.03 = 3,612.87 : x
  2. Step 2: Convert to fraction form
    8,879.13/13,317.03 = 3,612.87/x
  3. Step 3: Cross multiply
    8,879.13x = 13,317.03 × 3,612.87
  4. Step 4: Simplify right side
    8,879.13x = 48,112,698.18
  5. Step 5: Solve for x
    x = 48,112,698.18/8,879.13
  6. Step 6: Final answer
    x = 5,418.63

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1.5x scale

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.