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Finding the Fourth Proportional to 8,607.75, 12,913.80 and 2,451.75

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Solution

The fourth proportional to 8,607.75, 12,913.80 and 2,451.75 is: 3,678.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,607.75 : 12,913.80 = 2,451.75 : x
  2. Step 2: Convert to fraction form
    8,607.75/12,913.80 = 2,451.75/x
  3. Step 3: Cross multiply
    8,607.75x = 12,913.80 × 2,451.75
  4. Step 4: Simplify right side
    8,607.75x = 31,661,409.15
  5. Step 5: Solve for x
    x = 31,661,409.15/8,607.75
  6. Step 6: Final answer
    x = 3,678.24

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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.