Home / 2,675.70-4,013.64-826.80

Finding the Fourth Proportional to 2,675.70, 4,013.64 and 826.80

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Solution

The fourth proportional to 2,675.70, 4,013.64 and 826.80 is: 1,240.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,675.70 : 4,013.64 = 826.80 : x
  2. Step 2: Convert to fraction form
    2,675.70/4,013.64 = 826.80/x
  3. Step 3: Cross multiply
    2,675.70x = 4,013.64 × 826.80
  4. Step 4: Simplify right side
    2,675.70x = 3,318,477.55
  5. Step 5: Solve for x
    x = 3,318,477.55/2,675.70
  6. Step 6: Final answer
    x = 1,240.23

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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.