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Finding the Fourth Proportional to 1,938.06, 2,907 and 963.36

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Solution

The fourth proportional to 1,938.06, 2,907 and 963.36 is: 1,445.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,938.06 : 2,907 = 963.36 : x
  2. Step 2: Convert to fraction form
    1,938.06/2,907 = 963.36/x
  3. Step 3: Cross multiply
    1,938.06x = 2,907 × 963.36
  4. Step 4: Simplify right side
    1,938.06x = 2,800,487.52
  5. Step 5: Solve for x
    x = 2,800,487.52/1,938.06
  6. Step 6: Final answer
    x = 1,445.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.