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Finding the Fourth Proportional to 2,757.99, 4,137.67 and 810.19

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Solution

The fourth proportional to 2,757.99, 4,137.67 and 810.19 is: 1,215.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,757.99 : 4,137.67 = 810.19 : x
  2. Step 2: Convert to fraction form
    2,757.99/4,137.67 = 810.19/x
  3. Step 3: Cross multiply
    2,757.99x = 4,137.67 × 810.19
  4. Step 4: Simplify right side
    2,757.99x = 3,352,284.46
  5. Step 5: Solve for x
    x = 3,352,284.46/2,757.99
  6. Step 6: Final answer
    x = 1,215.48

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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.