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Finding the Fourth Proportional to 10,800.72, 16,201.08 and 3,405.76

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Solution

The fourth proportional to 10,800.72, 16,201.08 and 3,405.76 is: 5,108.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,800.72 : 16,201.08 = 3,405.76 : x
  2. Step 2: Convert to fraction form
    10,800.72/16,201.08 = 3,405.76/x
  3. Step 3: Cross multiply
    10,800.72x = 16,201.08 × 3,405.76
  4. Step 4: Simplify right side
    10,800.72x = 55,176,949.72
  5. Step 5: Solve for x
    x = 55,176,949.72/10,800.72
  6. Step 6: Final answer
    x = 5,108.64

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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.