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Finding the Fourth Proportional to 1,890.62, 2,818.67 and 1,842.67

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Solution

The fourth proportional to 1,890.62, 2,818.67 and 1,842.67 is: 2,747.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,890.62 : 2,818.67 = 1,842.67 : x
  2. Step 2: Convert to fraction form
    1,890.62/2,818.67 = 1,842.67/x
  3. Step 3: Cross multiply
    1,890.62x = 2,818.67 × 1,842.67
  4. Step 4: Simplify right side
    1,890.62x = 5,193,878.65
  5. Step 5: Solve for x
    x = 5,193,878.65/1,890.62
  6. Step 6: Final answer
    x = 2,747.18

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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.