Home / 9,108.78-13,666.44-3,186.54

Finding the Fourth Proportional to 9,108.78, 13,666.44 and 3,186.54

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Solution

The fourth proportional to 9,108.78, 13,666.44 and 3,186.54 is: 4,780.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,108.78 : 13,666.44 = 3,186.54 : x
  2. Step 2: Convert to fraction form
    9,108.78/13,666.44 = 3,186.54/x
  3. Step 3: Cross multiply
    9,108.78x = 13,666.44 × 3,186.54
  4. Step 4: Simplify right side
    9,108.78x = 43,548,657.72
  5. Step 5: Solve for x
    x = 43,548,657.72/9,108.78
  6. Step 6: Final answer
    x = 4,780.95

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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.