Home / 5,119.50-7,064.91-2,911.50

Finding the Fourth Proportional to 5,119.50, 7,064.91 and 2,911.50

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Solution

The fourth proportional to 5,119.50, 7,064.91 and 2,911.50 is: 4,017.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,119.50 : 7,064.91 = 2,911.50 : x
  2. Step 2: Convert to fraction form
    5,119.50/7,064.91 = 2,911.50/x
  3. Step 3: Cross multiply
    5,119.50x = 7,064.91 × 2,911.50
  4. Step 4: Simplify right side
    5,119.50x = 20,569,485.47
  5. Step 5: Solve for x
    x = 20,569,485.47/5,119.50
  6. Step 6: Final answer
    x = 4,017.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.