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Finding the Fourth Proportional to 6,959.28, 9,603.79 and 3,974.94

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Solution

The fourth proportional to 6,959.28, 9,603.79 and 3,974.94 is: 5,485.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,959.28 : 9,603.79 = 3,974.94 : x
  2. Step 2: Convert to fraction form
    6,959.28/9,603.79 = 3,974.94/x
  3. Step 3: Cross multiply
    6,959.28x = 9,603.79 × 3,974.94
  4. Step 4: Simplify right side
    6,959.28x = 38,174,479.09
  5. Step 5: Solve for x
    x = 38,174,479.09/6,959.28
  6. Step 6: Final answer
    x = 5,485.41

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1.5x scale

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.