Home / 2,115.36-3,171.21-1,018.22

Finding the Fourth Proportional to 2,115.36, 3,171.21 and 1,018.22

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Solution

The fourth proportional to 2,115.36, 3,171.21 and 1,018.22 is: 1,526.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,115.36 : 3,171.21 = 1,018.22 : x
  2. Step 2: Convert to fraction form
    2,115.36/3,171.21 = 1,018.22/x
  3. Step 3: Cross multiply
    2,115.36x = 3,171.21 × 1,018.22
  4. Step 4: Simplify right side
    2,115.36x = 3,228,973.59
  5. Step 5: Solve for x
    x = 3,228,973.59/2,115.36
  6. Step 6: Final answer
    x = 1,526.44

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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.