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Finding the Fourth Proportional to 11,772.60, 17,656.02 and 3,979.32

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Solution

The fourth proportional to 11,772.60, 17,656.02 and 3,979.32 is: 5,968.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,772.60 : 17,656.02 = 3,979.32 : x
  2. Step 2: Convert to fraction form
    11,772.60/17,656.02 = 3,979.32/x
  3. Step 3: Cross multiply
    11,772.60x = 17,656.02 × 3,979.32
  4. Step 4: Simplify right side
    11,772.60x = 70,258,953.51
  5. Step 5: Solve for x
    x = 70,258,953.51/11,772.60
  6. Step 6: Final answer
    x = 5,968.01

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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.