Home / 5,160.44-7,121.21-2,921.87

Finding the Fourth Proportional to 5,160.44, 7,121.21 and 2,921.87

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Solution

The fourth proportional to 5,160.44, 7,121.21 and 2,921.87 is: 4,032.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,160.44 : 7,121.21 = 2,921.87 : x
  2. Step 2: Convert to fraction form
    5,160.44/7,121.21 = 2,921.87/x
  3. Step 3: Cross multiply
    5,160.44x = 7,121.21 × 2,921.87
  4. Step 4: Simplify right side
    5,160.44x = 20,807,199.65
  5. Step 5: Solve for x
    x = 20,807,199.65/5,160.44
  6. Step 6: Final answer
    x = 4,032.06

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Why These Related Problems?

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