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Finding the Fourth Proportional to 1,814.50, 2,503.80 and 1,028.68

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Solution

The fourth proportional to 1,814.50, 2,503.80 and 1,028.68 is: 1,419.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,814.50 : 2,503.80 = 1,028.68 : x
  2. Step 2: Convert to fraction form
    1,814.50/2,503.80 = 1,028.68/x
  3. Step 3: Cross multiply
    1,814.50x = 2,503.80 × 1,028.68
  4. Step 4: Simplify right side
    1,814.50x = 2,575,608.98
  5. Step 5: Solve for x
    x = 2,575,608.98/1,814.50
  6. Step 6: Final answer
    x = 1,419.46

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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.