Home / 2,520.90-3,774.60-1,640.79

Finding the Fourth Proportional to 2,520.90, 3,774.60 and 1,640.79

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Solution

The fourth proportional to 2,520.90, 3,774.60 and 1,640.79 is: 2,456.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,520.90 : 3,774.60 = 1,640.79 : x
  2. Step 2: Convert to fraction form
    2,520.90/3,774.60 = 1,640.79/x
  3. Step 3: Cross multiply
    2,520.90x = 3,774.60 × 1,640.79
  4. Step 4: Simplify right side
    2,520.90x = 6,193,325.93
  5. Step 5: Solve for x
    x = 6,193,325.93/2,520.90
  6. Step 6: Final answer
    x = 2,456.79

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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.