Home / 3,110.70-4,666.86-919.50

Finding the Fourth Proportional to 3,110.70, 4,666.86 and 919.50

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Solution

The fourth proportional to 3,110.70, 4,666.86 and 919.50 is: 1,379.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,110.70 : 4,666.86 = 919.50 : x
  2. Step 2: Convert to fraction form
    3,110.70/4,666.86 = 919.50/x
  3. Step 3: Cross multiply
    3,110.70x = 4,666.86 × 919.50
  4. Step 4: Simplify right side
    3,110.70x = 4,291,177.77
  5. Step 5: Solve for x
    x = 4,291,177.77/3,110.70
  6. Step 6: Final answer
    x = 1,379.49

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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.