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Finding the Fourth Proportional to 5,336.71, 7,365.40 and 2,979

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Solution

The fourth proportional to 5,336.71, 7,365.40 and 2,979 is: 4,111.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,336.71 : 7,365.40 = 2,979 : x
  2. Step 2: Convert to fraction form
    5,336.71/7,365.40 = 2,979/x
  3. Step 3: Cross multiply
    5,336.71x = 7,365.40 × 2,979
  4. Step 4: Simplify right side
    5,336.71x = 21,941,519.15
  5. Step 5: Solve for x
    x = 21,941,519.15/5,336.71
  6. Step 6: Final answer
    x = 4,111.43

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.