Home / 5,398-8,100.65-2,110.68

Finding the Fourth Proportional to 5,398, 8,100.65 and 2,110.68

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Solution

The fourth proportional to 5,398, 8,100.65 and 2,110.68 is: 3,167.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,398 : 8,100.65 = 2,110.68 : x
  2. Step 2: Convert to fraction form
    5,398/8,100.65 = 2,110.68/x
  3. Step 3: Cross multiply
    5,398x = 8,100.65 × 2,110.68
  4. Step 4: Simplify right side
    5,398x = 17,097,879.94
  5. Step 5: Solve for x
    x = 17,097,879.94/5,398
  6. Step 6: Final answer
    x = 3,167.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.