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Finding the Fourth Proportional to 3,657.88, 5,486.88 and 1,192.96

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Solution

The fourth proportional to 3,657.88, 5,486.88 and 1,192.96 is: 1,789.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,657.88 : 5,486.88 = 1,192.96 : x
  2. Step 2: Convert to fraction form
    3,657.88/5,486.88 = 1,192.96/x
  3. Step 3: Cross multiply
    3,657.88x = 5,486.88 × 1,192.96
  4. Step 4: Simplify right side
    3,657.88x = 6,545,628.36
  5. Step 5: Solve for x
    x = 6,545,628.36/3,657.88
  6. Step 6: Final answer
    x = 1,789.46

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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.