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Finding the Fourth Proportional to 8,792.87, 12,137.88 and 8,555.94

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Solution

The fourth proportional to 8,792.87, 12,137.88 and 8,555.94 is: 11,810.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,792.87 : 12,137.88 = 8,555.94 : x
  2. Step 2: Convert to fraction form
    8,792.87/12,137.88 = 8,555.94/x
  3. Step 3: Cross multiply
    8,792.87x = 12,137.88 × 8,555.94
  4. Step 4: Simplify right side
    8,792.87x = 103,850,973.01
  5. Step 5: Solve for x
    x = 103,850,973.01/8,792.87
  6. Step 6: Final answer
    x = 11,810.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.