Home / 2,980.23-4,114.19-1,861.79

Finding the Fourth Proportional to 2,980.23, 4,114.19 and 1,861.79

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Solution

The fourth proportional to 2,980.23, 4,114.19 and 1,861.79 is: 2,570.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,980.23 : 4,114.19 = 1,861.79 : x
  2. Step 2: Convert to fraction form
    2,980.23/4,114.19 = 1,861.79/x
  3. Step 3: Cross multiply
    2,980.23x = 4,114.19 × 1,861.79
  4. Step 4: Simplify right side
    2,980.23x = 7,659,741.88
  5. Step 5: Solve for x
    x = 7,659,741.88/2,980.23
  6. Step 6: Final answer
    x = 2,570.19

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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.