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Finding the Fourth Proportional to 6,889.37, 10,329.61 and 2,943.20

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Solution

The fourth proportional to 6,889.37, 10,329.61 and 2,943.20 is: 4,412.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,889.37 : 10,329.61 = 2,943.20 : x
  2. Step 2: Convert to fraction form
    6,889.37/10,329.61 = 2,943.20/x
  3. Step 3: Cross multiply
    6,889.37x = 10,329.61 × 2,943.20
  4. Step 4: Simplify right side
    6,889.37x = 30,402,108.15
  5. Step 5: Solve for x
    x = 30,402,108.15/6,889.37
  6. Step 6: Final answer
    x = 4,412.90

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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.