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Finding the Fourth Proportional to 8,555.76, 12,839.78 and 3,626.77

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Solution

The fourth proportional to 8,555.76, 12,839.78 and 3,626.77 is: 5,442.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,555.76 : 12,839.78 = 3,626.77 : x
  2. Step 2: Convert to fraction form
    8,555.76/12,839.78 = 3,626.77/x
  3. Step 3: Cross multiply
    8,555.76x = 12,839.78 × 3,626.77
  4. Step 4: Simplify right side
    8,555.76x = 46,566,928.91
  5. Step 5: Solve for x
    x = 46,566,928.91/8,555.76
  6. Step 6: Final answer
    x = 5,442.76

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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.