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Finding the Fourth Proportional to 1,814.25, 2,503.67 and 986.25

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Solution

The fourth proportional to 1,814.25, 2,503.67 and 986.25 is: 1,361.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,814.25 : 2,503.67 = 986.25 : x
  2. Step 2: Convert to fraction form
    1,814.25/2,503.67 = 986.25/x
  3. Step 3: Cross multiply
    1,814.25x = 2,503.67 × 986.25
  4. Step 4: Simplify right side
    1,814.25x = 2,469,239.61
  5. Step 5: Solve for x
    x = 2,469,239.61/1,814.25
  6. Step 6: Final answer
    x = 1,361.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.