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Finding the Fourth Proportional to 2,693.66, 4,033.19 and 1,991.99

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Solution

The fourth proportional to 2,693.66, 4,033.19 and 1,991.99 is: 2,982.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,693.66 : 4,033.19 = 1,991.99 : x
  2. Step 2: Convert to fraction form
    2,693.66/4,033.19 = 1,991.99/x
  3. Step 3: Cross multiply
    2,693.66x = 4,033.19 × 1,991.99
  4. Step 4: Simplify right side
    2,693.66x = 8,034,089.21
  5. Step 5: Solve for x
    x = 8,034,089.21/2,693.66
  6. Step 6: Final answer
    x = 2,982.60

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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.