Home / 3,110.76-4,666.11-919.53

Finding the Fourth Proportional to 3,110.76, 4,666.11 and 919.53

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Solution

The fourth proportional to 3,110.76, 4,666.11 and 919.53 is: 1,379.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,110.76 : 4,666.11 = 919.53 : x
  2. Step 2: Convert to fraction form
    3,110.76/4,666.11 = 919.53/x
  3. Step 3: Cross multiply
    3,110.76x = 4,666.11 × 919.53
  4. Step 4: Simplify right side
    3,110.76x = 4,290,628.13
  5. Step 5: Solve for x
    x = 4,290,628.13/3,110.76
  6. Step 6: Final answer
    x = 1,379.29

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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.