Home / 5,075-7,613.62-2,155.80

Finding the Fourth Proportional to 5,075, 7,613.62 and 2,155.80

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Solution

The fourth proportional to 5,075, 7,613.62 and 2,155.80 is: 3,234.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,075 : 7,613.62 = 2,155.80 : x
  2. Step 2: Convert to fraction form
    5,075/7,613.62 = 2,155.80/x
  3. Step 3: Cross multiply
    5,075x = 7,613.62 × 2,155.80
  4. Step 4: Simplify right side
    5,075x = 16,413,442.00
  5. Step 5: Solve for x
    x = 16,413,442.00/5,075
  6. Step 6: Final answer
    x = 3,234.18

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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.