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Finding the Fourth Proportional to 2,995.69, 4,136 and 2,809.81

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Solution

The fourth proportional to 2,995.69, 4,136 and 2,809.81 is: 3,879.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,995.69 : 4,136 = 2,809.81 : x
  2. Step 2: Convert to fraction form
    2,995.69/4,136 = 2,809.81/x
  3. Step 3: Cross multiply
    2,995.69x = 4,136 × 2,809.81
  4. Step 4: Simplify right side
    2,995.69x = 11,621,374.16
  5. Step 5: Solve for x
    x = 11,621,374.16/2,995.69
  6. Step 6: Final answer
    x = 3,879.36

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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.