Home / 5,105.44-7,045.14-2,980.36

Finding the Fourth Proportional to 5,105.44, 7,045.14 and 2,980.36

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Solution

The fourth proportional to 5,105.44, 7,045.14 and 2,980.36 is: 4,112.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,105.44 : 7,045.14 = 2,980.36 : x
  2. Step 2: Convert to fraction form
    5,105.44/7,045.14 = 2,980.36/x
  3. Step 3: Cross multiply
    5,105.44x = 7,045.14 × 2,980.36
  4. Step 4: Simplify right side
    5,105.44x = 20,997,053.45
  5. Step 5: Solve for x
    x = 20,997,053.45/5,105.44
  6. Step 6: Final answer
    x = 4,112.68

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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.