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Finding the Fourth Proportional to 1,946.09, 2,919.31 and 559.58

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Solution

The fourth proportional to 1,946.09, 2,919.31 and 559.58 is: 839.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,946.09 : 2,919.31 = 559.58 : x
  2. Step 2: Convert to fraction form
    1,946.09/2,919.31 = 559.58/x
  3. Step 3: Cross multiply
    1,946.09x = 2,919.31 × 559.58
  4. Step 4: Simplify right side
    1,946.09x = 1,633,571.49
  5. Step 5: Solve for x
    x = 1,633,571.49/1,946.09
  6. Step 6: Final answer
    x = 839.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.