Home / 2,682.70-4,025.21-1,385.08

Finding the Fourth Proportional to 2,682.70, 4,025.21 and 1,385.08

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Solution

The fourth proportional to 2,682.70, 4,025.21 and 1,385.08 is: 2,078.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,682.70 : 4,025.21 = 1,385.08 : x
  2. Step 2: Convert to fraction form
    2,682.70/4,025.21 = 1,385.08/x
  3. Step 3: Cross multiply
    2,682.70x = 4,025.21 × 1,385.08
  4. Step 4: Simplify right side
    2,682.70x = 5,575,220.88
  5. Step 5: Solve for x
    x = 5,575,220.88/2,682.70
  6. Step 6: Final answer
    x = 2,078.21

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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.