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Finding the Fourth Proportional to 8,625.80, 12,927.38 and 3,878.40

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Solution

The fourth proportional to 8,625.80, 12,927.38 and 3,878.40 is: 5,812.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,625.80 : 12,927.38 = 3,878.40 : x
  2. Step 2: Convert to fraction form
    8,625.80/12,927.38 = 3,878.40/x
  3. Step 3: Cross multiply
    8,625.80x = 12,927.38 × 3,878.40
  4. Step 4: Simplify right side
    8,625.80x = 50,137,550.59
  5. Step 5: Solve for x
    x = 50,137,550.59/8,625.80
  6. Step 6: Final answer
    x = 5,812.51

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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.