Home / 3,680.45-5,079.95-2,485.80

Finding the Fourth Proportional to 3,680.45, 5,079.95 and 2,485.80

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Solution

The fourth proportional to 3,680.45, 5,079.95 and 2,485.80 is: 3,431.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,680.45 : 5,079.95 = 2,485.80 : x
  2. Step 2: Convert to fraction form
    3,680.45/5,079.95 = 2,485.80/x
  3. Step 3: Cross multiply
    3,680.45x = 5,079.95 × 2,485.80
  4. Step 4: Simplify right side
    3,680.45x = 12,627,736.60
  5. Step 5: Solve for x
    x = 12,627,736.60/3,680.45
  6. Step 6: Final answer
    x = 3,431.03

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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.