Home / 5,186.36-7,157.16-2,828.49

Finding the Fourth Proportional to 5,186.36, 7,157.16 and 2,828.49

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Solution

The fourth proportional to 5,186.36, 7,157.16 and 2,828.49 is: 3,903.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,186.36 : 7,157.16 = 2,828.49 : x
  2. Step 2: Convert to fraction form
    5,186.36/7,157.16 = 2,828.49/x
  3. Step 3: Cross multiply
    5,186.36x = 7,157.16 × 2,828.49
  4. Step 4: Simplify right side
    5,186.36x = 20,243,955.49
  5. Step 5: Solve for x
    x = 20,243,955.49/5,186.36
  6. Step 6: Final answer
    x = 3,903.31

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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.