Home / 2,911.76-4,368.81-1,331.23

Finding the Fourth Proportional to 2,911.76, 4,368.81 and 1,331.23

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Solution

The fourth proportional to 2,911.76, 4,368.81 and 1,331.23 is: 1,997.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,911.76 : 4,368.81 = 1,331.23 : x
  2. Step 2: Convert to fraction form
    2,911.76/4,368.81 = 1,331.23/x
  3. Step 3: Cross multiply
    2,911.76x = 4,368.81 × 1,331.23
  4. Step 4: Simplify right side
    2,911.76x = 5,815,890.94
  5. Step 5: Solve for x
    x = 5,815,890.94/2,911.76
  6. Step 6: Final answer
    x = 1,997.38

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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.