Home / 5,427.81-8,121.15-3,282.72

Finding the Fourth Proportional to 5,427.81, 8,121.15 and 3,282.72

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Solution

The fourth proportional to 5,427.81, 8,121.15 and 3,282.72 is: 4,911.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,427.81 : 8,121.15 = 3,282.72 : x
  2. Step 2: Convert to fraction form
    5,427.81/8,121.15 = 3,282.72/x
  3. Step 3: Cross multiply
    5,427.81x = 8,121.15 × 3,282.72
  4. Step 4: Simplify right side
    5,427.81x = 26,659,461.53
  5. Step 5: Solve for x
    x = 26,659,461.53/5,427.81
  6. Step 6: Final answer
    x = 4,911.64

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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.