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Finding the Fourth Proportional to 8,599.50, 12,900.40 and 3,404.16

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Solution

The fourth proportional to 8,599.50, 12,900.40 and 3,404.16 is: 5,106.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,599.50 : 12,900.40 = 3,404.16 : x
  2. Step 2: Convert to fraction form
    8,599.50/12,900.40 = 3,404.16/x
  3. Step 3: Cross multiply
    8,599.50x = 12,900.40 × 3,404.16
  4. Step 4: Simplify right side
    8,599.50x = 43,915,025.66
  5. Step 5: Solve for x
    x = 43,915,025.66/8,599.50
  6. Step 6: Final answer
    x = 5,106.70

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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.