Home / 2,980.44-4,112.18-1,861.88

Finding the Fourth Proportional to 2,980.44, 4,112.18 and 1,861.88

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Solution

The fourth proportional to 2,980.44, 4,112.18 and 1,861.88 is: 2,568.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,980.44 : 4,112.18 = 1,861.88 : x
  2. Step 2: Convert to fraction form
    2,980.44/4,112.18 = 1,861.88/x
  3. Step 3: Cross multiply
    2,980.44x = 4,112.18 × 1,861.88
  4. Step 4: Simplify right side
    2,980.44x = 7,656,385.70
  5. Step 5: Solve for x
    x = 7,656,385.70/2,980.44
  6. Step 6: Final answer
    x = 2,568.88

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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.