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Finding the Fourth Proportional to 6,447.47, 8,890.75 and 4,772.39

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Solution

The fourth proportional to 6,447.47, 8,890.75 and 4,772.39 is: 6,580.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,447.47 : 8,890.75 = 4,772.39 : x
  2. Step 2: Convert to fraction form
    6,447.47/8,890.75 = 4,772.39/x
  3. Step 3: Cross multiply
    6,447.47x = 8,890.75 × 4,772.39
  4. Step 4: Simplify right side
    6,447.47x = 42,430,070.01
  5. Step 5: Solve for x
    x = 42,430,070.01/6,447.47
  6. Step 6: Final answer
    x = 6,580.89

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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.