Home / 2,822.51-3,893.24-1,938.80

Finding the Fourth Proportional to 2,822.51, 3,893.24 and 1,938.80

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Solution

The fourth proportional to 2,822.51, 3,893.24 and 1,938.80 is: 2,674.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,822.51 : 3,893.24 = 1,938.80 : x
  2. Step 2: Convert to fraction form
    2,822.51/3,893.24 = 1,938.80/x
  3. Step 3: Cross multiply
    2,822.51x = 3,893.24 × 1,938.80
  4. Step 4: Simplify right side
    2,822.51x = 7,548,213.71
  5. Step 5: Solve for x
    x = 7,548,213.71/2,822.51
  6. Step 6: Final answer
    x = 2,674.29

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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.