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Finding the Fourth Proportional to 5,674.54, 8,511.80 and 1,778.94

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Solution

The fourth proportional to 5,674.54, 8,511.80 and 1,778.94 is: 2,668.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,674.54 : 8,511.80 = 1,778.94 : x
  2. Step 2: Convert to fraction form
    5,674.54/8,511.80 = 1,778.94/x
  3. Step 3: Cross multiply
    5,674.54x = 8,511.80 × 1,778.94
  4. Step 4: Simplify right side
    5,674.54x = 15,141,981.49
  5. Step 5: Solve for x
    x = 15,141,981.49/5,674.54
  6. Step 6: Final answer
    x = 2,668.41

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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.