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Finding the Fourth Proportional to 8,648.74, 12,975.04 and 2,645.34

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Solution

The fourth proportional to 8,648.74, 12,975.04 and 2,645.34 is: 3,968.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,648.74 : 12,975.04 = 2,645.34 : x
  2. Step 2: Convert to fraction form
    8,648.74/12,975.04 = 2,645.34/x
  3. Step 3: Cross multiply
    8,648.74x = 12,975.04 × 2,645.34
  4. Step 4: Simplify right side
    8,648.74x = 34,323,334.05
  5. Step 5: Solve for x
    x = 34,323,334.05/8,648.74
  6. Step 6: Final answer
    x = 3,968.60

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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.