Home / 5,487.40-8,220.30-3,289.60

Finding the Fourth Proportional to 5,487.40, 8,220.30 and 3,289.60

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Solution

The fourth proportional to 5,487.40, 8,220.30 and 3,289.60 is: 4,927.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,487.40 : 8,220.30 = 3,289.60 : x
  2. Step 2: Convert to fraction form
    5,487.40/8,220.30 = 3,289.60/x
  3. Step 3: Cross multiply
    5,487.40x = 8,220.30 × 3,289.60
  4. Step 4: Simplify right side
    5,487.40x = 27,041,498.88
  5. Step 5: Solve for x
    x = 27,041,498.88/5,487.40
  6. Step 6: Final answer
    x = 4,927.93

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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.