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Finding the Fourth Proportional to 8,418.02, 11,616.94 and 4,641.32

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Solution

The fourth proportional to 8,418.02, 11,616.94 and 4,641.32 is: 6,405.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,418.02 : 11,616.94 = 4,641.32 : x
  2. Step 2: Convert to fraction form
    8,418.02/11,616.94 = 4,641.32/x
  3. Step 3: Cross multiply
    8,418.02x = 11,616.94 × 4,641.32
  4. Step 4: Simplify right side
    8,418.02x = 53,917,883.68
  5. Step 5: Solve for x
    x = 53,917,883.68/8,418.02
  6. Step 6: Final answer
    x = 6,405.06

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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.