Home / 2,080.11-3,120.74-1,038.86

Finding the Fourth Proportional to 2,080.11, 3,120.74 and 1,038.86

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Solution

The fourth proportional to 2,080.11, 3,120.74 and 1,038.86 is: 1,558.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,080.11 : 3,120.74 = 1,038.86 : x
  2. Step 2: Convert to fraction form
    2,080.11/3,120.74 = 1,038.86/x
  3. Step 3: Cross multiply
    2,080.11x = 3,120.74 × 1,038.86
  4. Step 4: Simplify right side
    2,080.11x = 3,241,991.16
  5. Step 5: Solve for x
    x = 3,241,991.16/2,080.11
  6. Step 6: Final answer
    x = 1,558.57

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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.