Home / 7,517.58-11,280.21-3,078.48

Finding the Fourth Proportional to 7,517.58, 11,280.21 and 3,078.48

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Solution

The fourth proportional to 7,517.58, 11,280.21 and 3,078.48 is: 4,619.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,517.58 : 11,280.21 = 3,078.48 : x
  2. Step 2: Convert to fraction form
    7,517.58/11,280.21 = 3,078.48/x
  3. Step 3: Cross multiply
    7,517.58x = 11,280.21 × 3,078.48
  4. Step 4: Simplify right side
    7,517.58x = 34,725,900.88
  5. Step 5: Solve for x
    x = 34,725,900.88/7,517.58
  6. Step 6: Final answer
    x = 4,619.29

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1.5x scale

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.