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Finding the Fourth Proportional to 6,959.62, 9,604.67 and 4,128.67

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Solution

The fourth proportional to 6,959.62, 9,604.67 and 4,128.67 is: 5,697.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,959.62 : 9,604.67 = 4,128.67 : x
  2. Step 2: Convert to fraction form
    6,959.62/9,604.67 = 4,128.67/x
  3. Step 3: Cross multiply
    6,959.62x = 9,604.67 × 4,128.67
  4. Step 4: Simplify right side
    6,959.62x = 39,654,468.23
  5. Step 5: Solve for x
    x = 39,654,468.23/6,959.62
  6. Step 6: Final answer
    x = 5,697.79

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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.