Home / 2,021.74-2,790.99-1,276.85

Finding the Fourth Proportional to 2,021.74, 2,790.99 and 1,276.85

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Solution

The fourth proportional to 2,021.74, 2,790.99 and 1,276.85 is: 1,762.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,021.74 : 2,790.99 = 1,276.85 : x
  2. Step 2: Convert to fraction form
    2,021.74/2,790.99 = 1,276.85/x
  3. Step 3: Cross multiply
    2,021.74x = 2,790.99 × 1,276.85
  4. Step 4: Simplify right side
    2,021.74x = 3,563,682.56
  5. Step 5: Solve for x
    x = 3,563,682.56/2,021.74
  6. Step 6: Final answer
    x = 1,762.68

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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.