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Finding the Fourth Proportional to 2,674.80, 4,012.74 and 826.02

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Solution

The fourth proportional to 2,674.80, 4,012.74 and 826.02 is: 1,239.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,674.80 : 4,012.74 = 826.02 : x
  2. Step 2: Convert to fraction form
    2,674.80/4,012.74 = 826.02/x
  3. Step 3: Cross multiply
    2,674.80x = 4,012.74 × 826.02
  4. Step 4: Simplify right side
    2,674.80x = 3,314,603.49
  5. Step 5: Solve for x
    x = 3,314,603.49/2,674.80
  6. Step 6: Final answer
    x = 1,239.20

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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.