Home / 2,840.21-4,256.37-2,146.31

Finding the Fourth Proportional to 2,840.21, 4,256.37 and 2,146.31

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Solution

The fourth proportional to 2,840.21, 4,256.37 and 2,146.31 is: 3,216.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,840.21 : 4,256.37 = 2,146.31 : x
  2. Step 2: Convert to fraction form
    2,840.21/4,256.37 = 2,146.31/x
  3. Step 3: Cross multiply
    2,840.21x = 4,256.37 × 2,146.31
  4. Step 4: Simplify right side
    2,840.21x = 9,135,468.21
  5. Step 5: Solve for x
    x = 9,135,468.21/2,840.21
  6. Step 6: Final answer
    x = 3,216.48

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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.