Home / 8,938.20-12,336.48-5,163.82

Finding the Fourth Proportional to 8,938.20, 12,336.48 and 5,163.82

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Solution

The fourth proportional to 8,938.20, 12,336.48 and 5,163.82 is: 7,127.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,938.20 : 12,336.48 = 5,163.82 : x
  2. Step 2: Convert to fraction form
    8,938.20/12,336.48 = 5,163.82/x
  3. Step 3: Cross multiply
    8,938.20x = 12,336.48 × 5,163.82
  4. Step 4: Simplify right side
    8,938.20x = 63,703,362.15
  5. Step 5: Solve for x
    x = 63,703,362.15/8,938.20
  6. Step 6: Final answer
    x = 7,127.09

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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.