Home / 2,740.36-4,113.28-1,280.54

Finding the Fourth Proportional to 2,740.36, 4,113.28 and 1,280.54

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Solution

The fourth proportional to 2,740.36, 4,113.28 and 1,280.54 is: 1,922.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,740.36 : 4,113.28 = 1,280.54 : x
  2. Step 2: Convert to fraction form
    2,740.36/4,113.28 = 1,280.54/x
  3. Step 3: Cross multiply
    2,740.36x = 4,113.28 × 1,280.54
  4. Step 4: Simplify right side
    2,740.36x = 5,267,219.57
  5. Step 5: Solve for x
    x = 5,267,219.57/2,740.36
  6. Step 6: Final answer
    x = 1,922.09

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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.