Home / 2,270.58-3,131.46-1,918.22

Finding the Fourth Proportional to 2,270.58, 3,131.46 and 1,918.22

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Solution

The fourth proportional to 2,270.58, 3,131.46 and 1,918.22 is: 2,645.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,270.58 : 3,131.46 = 1,918.22 : x
  2. Step 2: Convert to fraction form
    2,270.58/3,131.46 = 1,918.22/x
  3. Step 3: Cross multiply
    2,270.58x = 3,131.46 × 1,918.22
  4. Step 4: Simplify right side
    2,270.58x = 6,006,829.20
  5. Step 5: Solve for x
    x = 6,006,829.20/2,270.58
  6. Step 6: Final answer
    x = 2,645.50

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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.