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Finding the Fourth Proportional to 7,891.59, 10,889.97 and 4,907.34

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Solution

The fourth proportional to 7,891.59, 10,889.97 and 4,907.34 is: 6,771.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,891.59 : 10,889.97 = 4,907.34 : x
  2. Step 2: Convert to fraction form
    7,891.59/10,889.97 = 4,907.34/x
  3. Step 3: Cross multiply
    7,891.59x = 10,889.97 × 4,907.34
  4. Step 4: Simplify right side
    7,891.59x = 53,440,785.38
  5. Step 5: Solve for x
    x = 53,440,785.38/7,891.59
  6. Step 6: Final answer
    x = 6,771.87

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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.