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Finding the Fourth Proportional to 6,447.88, 9,671.28 and 2,065.06

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Solution

The fourth proportional to 6,447.88, 9,671.28 and 2,065.06 is: 3,097.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,447.88 : 9,671.28 = 2,065.06 : x
  2. Step 2: Convert to fraction form
    6,447.88/9,671.28 = 2,065.06/x
  3. Step 3: Cross multiply
    6,447.88x = 9,671.28 × 2,065.06
  4. Step 4: Simplify right side
    6,447.88x = 19,971,773.48
  5. Step 5: Solve for x
    x = 19,971,773.48/6,447.88
  6. Step 6: Final answer
    x = 3,097.42

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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.