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Finding the Fourth Proportional to 2,055.65, 3,063.95 and 1,938.90

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Solution

The fourth proportional to 2,055.65, 3,063.95 and 1,938.90 is: 2,889.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,055.65 : 3,063.95 = 1,938.90 : x
  2. Step 2: Convert to fraction form
    2,055.65/3,063.95 = 1,938.90/x
  3. Step 3: Cross multiply
    2,055.65x = 3,063.95 × 1,938.90
  4. Step 4: Simplify right side
    2,055.65x = 5,940,692.66
  5. Step 5: Solve for x
    x = 5,940,692.66/2,055.65
  6. Step 6: Final answer
    x = 2,889.93

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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.