Home / 3,127.55-4,690.62-936.00

Finding the Fourth Proportional to 3,127.55, 4,690.62 and 936.00

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Solution

The fourth proportional to 3,127.55, 4,690.62 and 936.00 is: 1,403.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,127.55 : 4,690.62 = 936.00 : x
  2. Step 2: Convert to fraction form
    3,127.55/4,690.62 = 936.00/x
  3. Step 3: Cross multiply
    3,127.55x = 4,690.62 × 936.00
  4. Step 4: Simplify right side
    3,127.55x = 4,390,396.87
  5. Step 5: Solve for x
    x = 4,390,396.87/3,127.55
  6. Step 6: Final answer
    x = 1,403.78

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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.