Home / 2,765.26-4,139.61-2,666.80

Finding the Fourth Proportional to 2,765.26, 4,139.61 and 2,666.80

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Solution

The fourth proportional to 2,765.26, 4,139.61 and 2,666.80 is: 3,992.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,765.26 : 4,139.61 = 2,666.80 : x
  2. Step 2: Convert to fraction form
    2,765.26/4,139.61 = 2,666.80/x
  3. Step 3: Cross multiply
    2,765.26x = 4,139.61 × 2,666.80
  4. Step 4: Simplify right side
    2,765.26x = 11,039,511.95
  5. Step 5: Solve for x
    x = 11,039,511.95/2,765.26
  6. Step 6: Final answer
    x = 3,992.21

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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.