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Finding the Fourth Proportional to 11,908.92, 17,862.10 and 4,889.67

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Solution

The fourth proportional to 11,908.92, 17,862.10 and 4,889.67 is: 7,333.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,908.92 : 17,862.10 = 4,889.67 : x
  2. Step 2: Convert to fraction form
    11,908.92/17,862.10 = 4,889.67/x
  3. Step 3: Cross multiply
    11,908.92x = 17,862.10 × 4,889.67
  4. Step 4: Simplify right side
    11,908.92x = 87,339,774.51
  5. Step 5: Solve for x
    x = 87,339,774.51/11,908.92
  6. Step 6: Final answer
    x = 7,333.98

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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.