Home / 3,611.79-4,980.72-2,195.70

Finding the Fourth Proportional to 3,611.79, 4,980.72 and 2,195.70

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Solution

The fourth proportional to 3,611.79, 4,980.72 and 2,195.70 is: 3,027.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,611.79 : 4,980.72 = 2,195.70 : x
  2. Step 2: Convert to fraction form
    3,611.79/4,980.72 = 2,195.70/x
  3. Step 3: Cross multiply
    3,611.79x = 4,980.72 × 2,195.70
  4. Step 4: Simplify right side
    3,611.79x = 10,936,166.90
  5. Step 5: Solve for x
    x = 10,936,166.90/3,611.79
  6. Step 6: Final answer
    x = 3,027.91

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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.