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Finding the Fourth Proportional to 1,895.07, 2,840.67 and 855.66

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Solution

The fourth proportional to 1,895.07, 2,840.67 and 855.66 is: 1,282.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,895.07 : 2,840.67 = 855.66 : x
  2. Step 2: Convert to fraction form
    1,895.07/2,840.67 = 855.66/x
  3. Step 3: Cross multiply
    1,895.07x = 2,840.67 × 855.66
  4. Step 4: Simplify right side
    1,895.07x = 2,430,647.69
  5. Step 5: Solve for x
    x = 2,430,647.69/1,895.07
  6. Step 6: Final answer
    x = 1,282.62

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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.