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Finding the Fourth Proportional to 6,940.81, 10,411.87 and 1,943.18

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Solution

The fourth proportional to 6,940.81, 10,411.87 and 1,943.18 is: 2,914.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,940.81 : 10,411.87 = 1,943.18 : x
  2. Step 2: Convert to fraction form
    6,940.81/10,411.87 = 1,943.18/x
  3. Step 3: Cross multiply
    6,940.81x = 10,411.87 × 1,943.18
  4. Step 4: Simplify right side
    6,940.81x = 20,232,137.55
  5. Step 5: Solve for x
    x = 20,232,137.55/6,940.81
  6. Step 6: Final answer
    x = 2,914.96

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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.