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Finding the Fourth Proportional to 1,881.87, 2,823.44 and 842.59

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Solution

The fourth proportional to 1,881.87, 2,823.44 and 842.59 is: 1,264.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,881.87 : 2,823.44 = 842.59 : x
  2. Step 2: Convert to fraction form
    1,881.87/2,823.44 = 842.59/x
  3. Step 3: Cross multiply
    1,881.87x = 2,823.44 × 842.59
  4. Step 4: Simplify right side
    1,881.87x = 2,379,002.31
  5. Step 5: Solve for x
    x = 2,379,002.31/1,881.87
  6. Step 6: Final answer
    x = 1,264.17

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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.