Home / 2,760.36-4,141.18-911.40

Finding the Fourth Proportional to 2,760.36, 4,141.18 and 911.40

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Solution

The fourth proportional to 2,760.36, 4,141.18 and 911.40 is: 1,367.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,760.36 : 4,141.18 = 911.40 : x
  2. Step 2: Convert to fraction form
    2,760.36/4,141.18 = 911.40/x
  3. Step 3: Cross multiply
    2,760.36x = 4,141.18 × 911.40
  4. Step 4: Simplify right side
    2,760.36x = 3,774,271.45
  5. Step 5: Solve for x
    x = 3,774,271.45/2,760.36
  6. Step 6: Final answer
    x = 1,367.31

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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.