Home / 7,219.80-9,961.92-4,075.56

Finding the Fourth Proportional to 7,219.80, 9,961.92 and 4,075.56

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Solution

The fourth proportional to 7,219.80, 9,961.92 and 4,075.56 is: 5,623.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,219.80 : 9,961.92 = 4,075.56 : x
  2. Step 2: Convert to fraction form
    7,219.80/9,961.92 = 4,075.56/x
  3. Step 3: Cross multiply
    7,219.80x = 9,961.92 × 4,075.56
  4. Step 4: Simplify right side
    7,219.80x = 40,600,402.68
  5. Step 5: Solve for x
    x = 40,600,402.68/7,219.80
  6. Step 6: Final answer
    x = 5,623.48

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.