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Finding the Fourth Proportional to 1,806.90, 2,483.94 and 1,553.90

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Solution

The fourth proportional to 1,806.90, 2,483.94 and 1,553.90 is: 2,136.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,806.90 : 2,483.94 = 1,553.90 : x
  2. Step 2: Convert to fraction form
    1,806.90/2,483.94 = 1,553.90/x
  3. Step 3: Cross multiply
    1,806.90x = 2,483.94 × 1,553.90
  4. Step 4: Simplify right side
    1,806.90x = 3,859,794.37
  5. Step 5: Solve for x
    x = 3,859,794.37/1,806.90
  6. Step 6: Final answer
    x = 2,136.14

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.