Home / 5,160.44-7,121.38-2,802.60

Finding the Fourth Proportional to 5,160.44, 7,121.38 and 2,802.60

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Solution

The fourth proportional to 5,160.44, 7,121.38 and 2,802.60 is: 3,867.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,160.44 : 7,121.38 = 2,802.60 : x
  2. Step 2: Convert to fraction form
    5,160.44/7,121.38 = 2,802.60/x
  3. Step 3: Cross multiply
    5,160.44x = 7,121.38 × 2,802.60
  4. Step 4: Simplify right side
    5,160.44x = 19,958,379.59
  5. Step 5: Solve for x
    x = 19,958,379.59/5,160.44
  6. Step 6: Final answer
    x = 3,867.57

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1.5x scale

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.