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Finding the Fourth Proportional to 1,907.58, 2,861.43 and 658.26

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Solution

The fourth proportional to 1,907.58, 2,861.43 and 658.26 is: 987.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,907.58 : 2,861.43 = 658.26 : x
  2. Step 2: Convert to fraction form
    1,907.58/2,861.43 = 658.26/x
  3. Step 3: Cross multiply
    1,907.58x = 2,861.43 × 658.26
  4. Step 4: Simplify right side
    1,907.58x = 1,883,564.91
  5. Step 5: Solve for x
    x = 1,883,564.91/1,907.58
  6. Step 6: Final answer
    x = 987.41

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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.