Home / 8,124.28-12,172.41-5,485.96

Finding the Fourth Proportional to 8,124.28, 12,172.41 and 5,485.96

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Solution

The fourth proportional to 8,124.28, 12,172.41 and 5,485.96 is: 8,219.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,124.28 : 12,172.41 = 5,485.96 : x
  2. Step 2: Convert to fraction form
    8,124.28/12,172.41 = 5,485.96/x
  3. Step 3: Cross multiply
    8,124.28x = 12,172.41 × 5,485.96
  4. Step 4: Simplify right side
    8,124.28x = 66,777,354.36
  5. Step 5: Solve for x
    x = 66,777,354.36/8,124.28
  6. Step 6: Final answer
    x = 8,219.48

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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.