Home / 5,382.92-8,075.82-1,920.36

Finding the Fourth Proportional to 5,382.92, 8,075.82 and 1,920.36

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Solution

The fourth proportional to 5,382.92, 8,075.82 and 1,920.36 is: 2,881.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,382.92 : 8,075.82 = 1,920.36 : x
  2. Step 2: Convert to fraction form
    5,382.92/8,075.82 = 1,920.36/x
  3. Step 3: Cross multiply
    5,382.92x = 8,075.82 × 1,920.36
  4. Step 4: Simplify right side
    5,382.92x = 15,508,481.70
  5. Step 5: Solve for x
    x = 15,508,481.70/5,382.92
  6. Step 6: Final answer
    x = 2,881.05

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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.