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Finding the Fourth Proportional to 8,625.48, 12,933.54 and 2,780.52

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Solution

The fourth proportional to 8,625.48, 12,933.54 and 2,780.52 is: 4,169.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,625.48 : 12,933.54 = 2,780.52 : x
  2. Step 2: Convert to fraction form
    8,625.48/12,933.54 = 2,780.52/x
  3. Step 3: Cross multiply
    8,625.48x = 12,933.54 × 2,780.52
  4. Step 4: Simplify right side
    8,625.48x = 35,961,966.64
  5. Step 5: Solve for x
    x = 35,961,966.64/8,625.48
  6. Step 6: Final answer
    x = 4,169.27

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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.