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Finding the Fourth Proportional to 1,890.57, 2,821.57 and 1,841.37

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Solution

The fourth proportional to 1,890.57, 2,821.57 and 1,841.37 is: 2,748.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,890.57 : 2,821.57 = 1,841.37 : x
  2. Step 2: Convert to fraction form
    1,890.57/2,821.57 = 1,841.37/x
  3. Step 3: Cross multiply
    1,890.57x = 2,821.57 × 1,841.37
  4. Step 4: Simplify right side
    1,890.57x = 5,195,539.17
  5. Step 5: Solve for x
    x = 5,195,539.17/1,890.57
  6. Step 6: Final answer
    x = 2,748.13

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.