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Finding the Fourth Proportional to 2,878.97, 3,973.19 and 1,620.23

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Solution

The fourth proportional to 2,878.97, 3,973.19 and 1,620.23 is: 2,236.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,878.97 : 3,973.19 = 1,620.23 : x
  2. Step 2: Convert to fraction form
    2,878.97/3,973.19 = 1,620.23/x
  3. Step 3: Cross multiply
    2,878.97x = 3,973.19 × 1,620.23
  4. Step 4: Simplify right side
    2,878.97x = 6,437,453.67
  5. Step 5: Solve for x
    x = 6,437,453.67/2,878.97
  6. Step 6: Final answer
    x = 2,236.03

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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.