Home / 3,640.40-5,461.98-2,180.60

Finding the Fourth Proportional to 3,640.40, 5,461.98 and 2,180.60

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Solution

The fourth proportional to 3,640.40, 5,461.98 and 2,180.60 is: 3,271.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,640.40 : 5,461.98 = 2,180.60 : x
  2. Step 2: Convert to fraction form
    3,640.40/5,461.98 = 2,180.60/x
  3. Step 3: Cross multiply
    3,640.40x = 5,461.98 × 2,180.60
  4. Step 4: Simplify right side
    3,640.40x = 11,910,393.59
  5. Step 5: Solve for x
    x = 11,910,393.59/3,640.40
  6. Step 6: Final answer
    x = 3,271.73

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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.