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Finding the Fourth Proportional to 8,185.57, 12,271.41 and 2,918.99

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Solution

The fourth proportional to 8,185.57, 12,271.41 and 2,918.99 is: 4,376.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,185.57 : 12,271.41 = 2,918.99 : x
  2. Step 2: Convert to fraction form
    8,185.57/12,271.41 = 2,918.99/x
  3. Step 3: Cross multiply
    8,185.57x = 12,271.41 × 2,918.99
  4. Step 4: Simplify right side
    8,185.57x = 35,820,153.75
  5. Step 5: Solve for x
    x = 35,820,153.75/8,185.57
  6. Step 6: Final answer
    x = 4,376.01

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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.