Home / 8,144.50-12,204.60-5,220.40

Finding the Fourth Proportional to 8,144.50, 12,204.60 and 5,220.40

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Solution

The fourth proportional to 8,144.50, 12,204.60 and 5,220.40 is: 7,822.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,144.50 : 12,204.60 = 5,220.40 : x
  2. Step 2: Convert to fraction form
    8,144.50/12,204.60 = 5,220.40/x
  3. Step 3: Cross multiply
    8,144.50x = 12,204.60 × 5,220.40
  4. Step 4: Simplify right side
    8,144.50x = 63,712,893.84
  5. Step 5: Solve for x
    x = 63,712,893.84/8,144.50
  6. Step 6: Final answer
    x = 7,822.81

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1.5x scale

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.