Home / 5,205.50-7,808.31-2,127.50

Finding the Fourth Proportional to 5,205.50, 7,808.31 and 2,127.50

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Solution

The fourth proportional to 5,205.50, 7,808.31 and 2,127.50 is: 3,191.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,205.50 : 7,808.31 = 2,127.50 : x
  2. Step 2: Convert to fraction form
    5,205.50/7,808.31 = 2,127.50/x
  3. Step 3: Cross multiply
    5,205.50x = 7,808.31 × 2,127.50
  4. Step 4: Simplify right side
    5,205.50x = 16,612,179.53
  5. Step 5: Solve for x
    x = 16,612,179.53/5,205.50
  6. Step 6: Final answer
    x = 3,191.27

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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.