Home / 10,912.72-16,367.08-3,119.64

Finding the Fourth Proportional to 10,912.72, 16,367.08 and 3,119.64

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Solution

The fourth proportional to 10,912.72, 16,367.08 and 3,119.64 is: 4,678.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,912.72 : 16,367.08 = 3,119.64 : x
  2. Step 2: Convert to fraction form
    10,912.72/16,367.08 = 3,119.64/x
  3. Step 3: Cross multiply
    10,912.72x = 16,367.08 × 3,119.64
  4. Step 4: Simplify right side
    10,912.72x = 51,059,397.45
  5. Step 5: Solve for x
    x = 51,059,397.45/10,912.72
  6. Step 6: Final answer
    x = 4,678.89

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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.