Home / 2,820.44-3,895.27-1,938.80

Finding the Fourth Proportional to 2,820.44, 3,895.27 and 1,938.80

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Solution

The fourth proportional to 2,820.44, 3,895.27 and 1,938.80 is: 2,677.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,820.44 : 3,895.27 = 1,938.80 : x
  2. Step 2: Convert to fraction form
    2,820.44/3,895.27 = 1,938.80/x
  3. Step 3: Cross multiply
    2,820.44x = 3,895.27 × 1,938.80
  4. Step 4: Simplify right side
    2,820.44x = 7,552,130.00
  5. Step 5: Solve for x
    x = 7,552,130.00/2,820.44
  6. Step 6: Final answer
    x = 2,677.65

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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.