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Finding the Fourth Proportional to 8,712.20, 12,022.84 and 4,733.32

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Solution

The fourth proportional to 8,712.20, 12,022.84 and 4,733.32 is: 6,531.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,712.20 : 12,022.84 = 4,733.32 : x
  2. Step 2: Convert to fraction form
    8,712.20/12,022.84 = 4,733.32/x
  3. Step 3: Cross multiply
    8,712.20x = 12,022.84 × 4,733.32
  4. Step 4: Simplify right side
    8,712.20x = 56,907,949.03
  5. Step 5: Solve for x
    x = 56,907,949.03/8,712.20
  6. Step 6: Final answer
    x = 6,531.98

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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.