Home / 8,220.90-12,325.47-3,835.96

Finding the Fourth Proportional to 8,220.90, 12,325.47 and 3,835.96

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Solution

The fourth proportional to 8,220.90, 12,325.47 and 3,835.96 is: 5,751.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,220.90 : 12,325.47 = 3,835.96 : x
  2. Step 2: Convert to fraction form
    8,220.90/12,325.47 = 3,835.96/x
  3. Step 3: Cross multiply
    8,220.90x = 12,325.47 × 3,835.96
  4. Step 4: Simplify right side
    8,220.90x = 47,280,009.90
  5. Step 5: Solve for x
    x = 47,280,009.90/8,220.90
  6. Step 6: Final answer
    x = 5,751.20

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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.