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Finding the Fourth Proportional to 1,857.41, 2,786.38 and 558.98

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Solution

The fourth proportional to 1,857.41, 2,786.38 and 558.98 is: 838.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,857.41 : 2,786.38 = 558.98 : x
  2. Step 2: Convert to fraction form
    1,857.41/2,786.38 = 558.98/x
  3. Step 3: Cross multiply
    1,857.41x = 2,786.38 × 558.98
  4. Step 4: Simplify right side
    1,857.41x = 1,557,530.69
  5. Step 5: Solve for x
    x = 1,557,530.69/1,857.41
  6. Step 6: Final answer
    x = 838.55

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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.