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Finding the Fourth Proportional to 7,964.78, 10,990.62 and 4,606.92

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Solution

The fourth proportional to 7,964.78, 10,990.62 and 4,606.92 is: 6,357.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,964.78 : 10,990.62 = 4,606.92 : x
  2. Step 2: Convert to fraction form
    7,964.78/10,990.62 = 4,606.92/x
  3. Step 3: Cross multiply
    7,964.78x = 10,990.62 × 4,606.92
  4. Step 4: Simplify right side
    7,964.78x = 50,632,907.09
  5. Step 5: Solve for x
    x = 50,632,907.09/7,964.78
  6. Step 6: Final answer
    x = 6,357.10

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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.