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Finding the Fourth Proportional to 6,889.98, 10,335 and 2,940.66

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Solution

The fourth proportional to 6,889.98, 10,335 and 2,940.66 is: 4,411.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,889.98 : 10,335 = 2,940.66 : x
  2. Step 2: Convert to fraction form
    6,889.98/10,335 = 2,940.66/x
  3. Step 3: Cross multiply
    6,889.98x = 10,335 × 2,940.66
  4. Step 4: Simplify right side
    6,889.98x = 30,391,721.10
  5. Step 5: Solve for x
    x = 30,391,721.10/6,889.98
  6. Step 6: Final answer
    x = 4,411.00

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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.