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Finding the Fourth Proportional to 8,599.75, 12,900.24 and 3,405.63

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Solution

The fourth proportional to 8,599.75, 12,900.24 and 3,405.63 is: 5,108.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,599.75 : 12,900.24 = 3,405.63 : x
  2. Step 2: Convert to fraction form
    8,599.75/12,900.24 = 3,405.63/x
  3. Step 3: Cross multiply
    8,599.75x = 12,900.24 × 3,405.63
  4. Step 4: Simplify right side
    8,599.75x = 43,933,444.35
  5. Step 5: Solve for x
    x = 43,933,444.35/8,599.75
  6. Step 6: Final answer
    x = 5,108.69

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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.