Home / 2,840.15-4,257.72-1,107.56

Finding the Fourth Proportional to 2,840.15, 4,257.72 and 1,107.56

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Solution

The fourth proportional to 2,840.15, 4,257.72 and 1,107.56 is: 1,660.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,840.15 : 4,257.72 = 1,107.56 : x
  2. Step 2: Convert to fraction form
    2,840.15/4,257.72 = 1,107.56/x
  3. Step 3: Cross multiply
    2,840.15x = 4,257.72 × 1,107.56
  4. Step 4: Simplify right side
    2,840.15x = 4,715,691.01
  5. Step 5: Solve for x
    x = 4,715,691.01/2,840.15
  6. Step 6: Final answer
    x = 1,660.37

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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.