Home / 7,517.81-11,280.85-3,820.36

Finding the Fourth Proportional to 7,517.81, 11,280.85 and 3,820.36

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Solution

The fourth proportional to 7,517.81, 11,280.85 and 3,820.36 is: 5,732.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,517.81 : 11,280.85 = 3,820.36 : x
  2. Step 2: Convert to fraction form
    7,517.81/11,280.85 = 3,820.36/x
  3. Step 3: Cross multiply
    7,517.81x = 11,280.85 × 3,820.36
  4. Step 4: Simplify right side
    7,517.81x = 43,096,891.50
  5. Step 5: Solve for x
    x = 43,096,891.50/7,517.81
  6. Step 6: Final answer
    x = 5,732.64

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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.