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Finding the Fourth Proportional to 8,118.77, 11,203.94 and 4,392.77

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Solution

The fourth proportional to 8,118.77, 11,203.94 and 4,392.77 is: 6,062.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,118.77 : 11,203.94 = 4,392.77 : x
  2. Step 2: Convert to fraction form
    8,118.77/11,203.94 = 4,392.77/x
  3. Step 3: Cross multiply
    8,118.77x = 11,203.94 × 4,392.77
  4. Step 4: Simplify right side
    8,118.77x = 49,216,374.83
  5. Step 5: Solve for x
    x = 49,216,374.83/8,118.77
  6. Step 6: Final answer
    x = 6,062.05

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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.