Home / 2,107.32-2,908.40-1,519.80

Finding the Fourth Proportional to 2,107.32, 2,908.40 and 1,519.80

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Solution

The fourth proportional to 2,107.32, 2,908.40 and 1,519.80 is: 2,097.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,107.32 : 2,908.40 = 1,519.80 : x
  2. Step 2: Convert to fraction form
    2,107.32/2,908.40 = 1,519.80/x
  3. Step 3: Cross multiply
    2,107.32x = 2,908.40 × 1,519.80
  4. Step 4: Simplify right side
    2,107.32x = 4,420,186.32
  5. Step 5: Solve for x
    x = 4,420,186.32/2,107.32
  6. Step 6: Final answer
    x = 2,097.54

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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.