Home / 5,521.31-7,619.20-3,162.99

Finding the Fourth Proportional to 5,521.31, 7,619.20 and 3,162.99

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Solution

The fourth proportional to 5,521.31, 7,619.20 and 3,162.99 is: 4,364.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,521.31 : 7,619.20 = 3,162.99 : x
  2. Step 2: Convert to fraction form
    5,521.31/7,619.20 = 3,162.99/x
  3. Step 3: Cross multiply
    5,521.31x = 7,619.20 × 3,162.99
  4. Step 4: Simplify right side
    5,521.31x = 24,099,453.41
  5. Step 5: Solve for x
    x = 24,099,453.41/5,521.31
  6. Step 6: Final answer
    x = 4,364.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.