Home / 5,119.44-7,678.89-2,521.50

Finding the Fourth Proportional to 5,119.44, 7,678.89 and 2,521.50

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Solution

The fourth proportional to 5,119.44, 7,678.89 and 2,521.50 is: 3,782.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,119.44 : 7,678.89 = 2,521.50 : x
  2. Step 2: Convert to fraction form
    5,119.44/7,678.89 = 2,521.50/x
  3. Step 3: Cross multiply
    5,119.44x = 7,678.89 × 2,521.50
  4. Step 4: Simplify right side
    5,119.44x = 19,362,321.14
  5. Step 5: Solve for x
    x = 19,362,321.14/5,119.44
  6. Step 6: Final answer
    x = 3,782.12

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1.5x scale

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.