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Finding the Fourth Proportional to 8,625.44, 12,935.46 and 2,780.84

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Solution

The fourth proportional to 8,625.44, 12,935.46 and 2,780.84 is: 4,170.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,625.44 : 12,935.46 = 2,780.84 : x
  2. Step 2: Convert to fraction form
    8,625.44/12,935.46 = 2,780.84/x
  3. Step 3: Cross multiply
    8,625.44x = 12,935.46 × 2,780.84
  4. Step 4: Simplify right side
    8,625.44x = 35,971,444.59
  5. Step 5: Solve for x
    x = 35,971,444.59/8,625.44
  6. Step 6: Final answer
    x = 4,170.39

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1.5x scale

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.