Home / 2,804.21-4,201.53-1,980.90

Finding the Fourth Proportional to 2,804.21, 4,201.53 and 1,980.90

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Solution

The fourth proportional to 2,804.21, 4,201.53 and 1,980.90 is: 2,967.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,804.21 : 4,201.53 = 1,980.90 : x
  2. Step 2: Convert to fraction form
    2,804.21/4,201.53 = 1,980.90/x
  3. Step 3: Cross multiply
    2,804.21x = 4,201.53 × 1,980.90
  4. Step 4: Simplify right side
    2,804.21x = 8,322,810.78
  5. Step 5: Solve for x
    x = 8,322,810.78/2,804.21
  6. Step 6: Final answer
    x = 2,967.97

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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.