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Finding the Fourth Proportional to 4,986.95, 6,880.43 and 2,997.95

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Solution

The fourth proportional to 4,986.95, 6,880.43 and 2,997.95 is: 4,136.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,986.95 : 6,880.43 = 2,997.95 : x
  2. Step 2: Convert to fraction form
    4,986.95/6,880.43 = 2,997.95/x
  3. Step 3: Cross multiply
    4,986.95x = 6,880.43 × 2,997.95
  4. Step 4: Simplify right side
    4,986.95x = 20,627,158.21
  5. Step 5: Solve for x
    x = 20,627,158.21/4,986.95
  6. Step 6: Final answer
    x = 4,136.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.