Home / 2,087.94-2,880.09-1,379.79

Finding the Fourth Proportional to 2,087.94, 2,880.09 and 1,379.79

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Solution

The fourth proportional to 2,087.94, 2,880.09 and 1,379.79 is: 1,903.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,087.94 : 2,880.09 = 1,379.79 : x
  2. Step 2: Convert to fraction form
    2,087.94/2,880.09 = 1,379.79/x
  3. Step 3: Cross multiply
    2,087.94x = 2,880.09 × 1,379.79
  4. Step 4: Simplify right side
    2,087.94x = 3,973,919.38
  5. Step 5: Solve for x
    x = 3,973,919.38/2,087.94
  6. Step 6: Final answer
    x = 1,903.27

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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.