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Finding the Fourth Proportional to 5,673.92, 8,511.68 and 1,778.63

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Solution

The fourth proportional to 5,673.92, 8,511.68 and 1,778.63 is: 2,668.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,673.92 : 8,511.68 = 1,778.63 : x
  2. Step 2: Convert to fraction form
    5,673.92/8,511.68 = 1,778.63/x
  3. Step 3: Cross multiply
    5,673.92x = 8,511.68 × 1,778.63
  4. Step 4: Simplify right side
    5,673.92x = 15,139,091.29
  5. Step 5: Solve for x
    x = 15,139,091.29/5,673.92
  6. Step 6: Final answer
    x = 2,668.19

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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.