Home / 3,110.88-4,666.31-919.44

Finding the Fourth Proportional to 3,110.88, 4,666.31 and 919.44

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Solution

The fourth proportional to 3,110.88, 4,666.31 and 919.44 is: 1,379.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,110.88 : 4,666.31 = 919.44 : x
  2. Step 2: Convert to fraction form
    3,110.88/4,666.31 = 919.44/x
  3. Step 3: Cross multiply
    3,110.88x = 4,666.31 × 919.44
  4. Step 4: Simplify right side
    3,110.88x = 4,290,387.47
  5. Step 5: Solve for x
    x = 4,290,387.47/3,110.88
  6. Step 6: Final answer
    x = 1,379.16

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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.