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Finding the Fourth Proportional to 7,662.36, 11,490.46 and 2,979.74

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Solution

The fourth proportional to 7,662.36, 11,490.46 and 2,979.74 is: 4,468.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,662.36 : 11,490.46 = 2,979.74 : x
  2. Step 2: Convert to fraction form
    7,662.36/11,490.46 = 2,979.74/x
  3. Step 3: Cross multiply
    7,662.36x = 11,490.46 × 2,979.74
  4. Step 4: Simplify right side
    7,662.36x = 34,238,583.28
  5. Step 5: Solve for x
    x = 34,238,583.28/7,662.36
  6. Step 6: Final answer
    x = 4,468.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.