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Finding the Fourth Proportional to 6,959.79, 9,604.64 and 3,815.94

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Solution

The fourth proportional to 6,959.79, 9,604.64 and 3,815.94 is: 5,266.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,959.79 : 9,604.64 = 3,815.94 : x
  2. Step 2: Convert to fraction form
    6,959.79/9,604.64 = 3,815.94/x
  3. Step 3: Cross multiply
    6,959.79x = 9,604.64 × 3,815.94
  4. Step 4: Simplify right side
    6,959.79x = 36,650,710.88
  5. Step 5: Solve for x
    x = 36,650,710.88/6,959.79
  6. Step 6: Final answer
    x = 5,266.07

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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.