Home / 5,021.76-6,929.94-2,897.28

Finding the Fourth Proportional to 5,021.76, 6,929.94 and 2,897.28

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Solution

The fourth proportional to 5,021.76, 6,929.94 and 2,897.28 is: 3,998.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,021.76 : 6,929.94 = 2,897.28 : x
  2. Step 2: Convert to fraction form
    5,021.76/6,929.94 = 2,897.28/x
  3. Step 3: Cross multiply
    5,021.76x = 6,929.94 × 2,897.28
  4. Step 4: Simplify right side
    5,021.76x = 20,077,976.56
  5. Step 5: Solve for x
    x = 20,077,976.56/5,021.76
  6. Step 6: Final answer
    x = 3,998.20

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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.