Home / 3,110.60-4,666.62-919.28

Finding the Fourth Proportional to 3,110.60, 4,666.62 and 919.28

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Solution

The fourth proportional to 3,110.60, 4,666.62 and 919.28 is: 1,379.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,110.60 : 4,666.62 = 919.28 : x
  2. Step 2: Convert to fraction form
    3,110.60/4,666.62 = 919.28/x
  3. Step 3: Cross multiply
    3,110.60x = 4,666.62 × 919.28
  4. Step 4: Simplify right side
    3,110.60x = 4,289,930.43
  5. Step 5: Solve for x
    x = 4,289,930.43/3,110.60
  6. Step 6: Final answer
    x = 1,379.13

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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.