Home / 2,040.10-2,815.26-1,108.60

Finding the Fourth Proportional to 2,040.10, 2,815.26 and 1,108.60

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Solution

The fourth proportional to 2,040.10, 2,815.26 and 1,108.60 is: 1,529.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,040.10 : 2,815.26 = 1,108.60 : x
  2. Step 2: Convert to fraction form
    2,040.10/2,815.26 = 1,108.60/x
  3. Step 3: Cross multiply
    2,040.10x = 2,815.26 × 1,108.60
  4. Step 4: Simplify right side
    2,040.10x = 3,120,997.24
  5. Step 5: Solve for x
    x = 3,120,997.24/2,040.10
  6. Step 6: Final answer
    x = 1,529.83

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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.