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Finding the Fourth Proportional to 5,447.64, 7,518.34 and 3,458

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Solution

The fourth proportional to 5,447.64, 7,518.34 and 3,458 is: 4,772.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,447.64 : 7,518.34 = 3,458 : x
  2. Step 2: Convert to fraction form
    5,447.64/7,518.34 = 3,458/x
  3. Step 3: Cross multiply
    5,447.64x = 7,518.34 × 3,458
  4. Step 4: Simplify right side
    5,447.64x = 25,998,419.72
  5. Step 5: Solve for x
    x = 25,998,419.72/5,447.64
  6. Step 6: Final answer
    x = 4,772.42

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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.