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Finding the Fourth Proportional to 8,458.84, 12,690.18 and 4,563.16

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Solution

The fourth proportional to 8,458.84, 12,690.18 and 4,563.16 is: 6,845.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,458.84 : 12,690.18 = 4,563.16 : x
  2. Step 2: Convert to fraction form
    8,458.84/12,690.18 = 4,563.16/x
  3. Step 3: Cross multiply
    8,458.84x = 12,690.18 × 4,563.16
  4. Step 4: Simplify right side
    8,458.84x = 57,907,321.77
  5. Step 5: Solve for x
    x = 57,907,321.77/8,458.84
  6. Step 6: Final answer
    x = 6,845.78

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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.