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Finding the Fourth Proportional to 3,947.65, 5,918.43 and 1,482.41

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Solution

The fourth proportional to 3,947.65, 5,918.43 and 1,482.41 is: 2,222.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,947.65 : 5,918.43 = 1,482.41 : x
  2. Step 2: Convert to fraction form
    3,947.65/5,918.43 = 1,482.41/x
  3. Step 3: Cross multiply
    3,947.65x = 5,918.43 × 1,482.41
  4. Step 4: Simplify right side
    3,947.65x = 8,773,539.82
  5. Step 5: Solve for x
    x = 8,773,539.82/3,947.65
  6. Step 6: Final answer
    x = 2,222.47

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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.