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Finding the Fourth Proportional to 2,262, 3,121.02 and 1,317.21

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Solution

The fourth proportional to 2,262, 3,121.02 and 1,317.21 is: 1,817.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,262 : 3,121.02 = 1,317.21 : x
  2. Step 2: Convert to fraction form
    2,262/3,121.02 = 1,317.21/x
  3. Step 3: Cross multiply
    2,262x = 3,121.02 × 1,317.21
  4. Step 4: Simplify right side
    2,262x = 4,111,038.75
  5. Step 5: Solve for x
    x = 4,111,038.75/2,262
  6. Step 6: Final answer
    x = 1,817.44

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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.