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Finding the Fourth Proportional to 8,116.63, 11,200.87 and 4,390.63

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Solution

The fourth proportional to 8,116.63, 11,200.87 and 4,390.63 is: 6,059.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,116.63 : 11,200.87 = 4,390.63 : x
  2. Step 2: Convert to fraction form
    8,116.63/11,200.87 = 4,390.63/x
  3. Step 3: Cross multiply
    8,116.63x = 11,200.87 × 4,390.63
  4. Step 4: Simplify right side
    8,116.63x = 49,178,853.33
  5. Step 5: Solve for x
    x = 49,178,853.33/8,116.63
  6. Step 6: Final answer
    x = 6,059.03

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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.