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Finding the Fourth Proportional to 2,012.65, 2,777.19 and 1,226.54

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Solution

The fourth proportional to 2,012.65, 2,777.19 and 1,226.54 is: 1,692.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,012.65 : 2,777.19 = 1,226.54 : x
  2. Step 2: Convert to fraction form
    2,012.65/2,777.19 = 1,226.54/x
  3. Step 3: Cross multiply
    2,012.65x = 2,777.19 × 1,226.54
  4. Step 4: Simplify right side
    2,012.65x = 3,406,336.97
  5. Step 5: Solve for x
    x = 3,406,336.97/2,012.65
  6. Step 6: Final answer
    x = 1,692.47

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1.5x scale

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.