Home / 8,412.96-12,616.56-3,220.32

Finding the Fourth Proportional to 8,412.96, 12,616.56 and 3,220.32

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Solution

The fourth proportional to 8,412.96, 12,616.56 and 3,220.32 is: 4,829.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,412.96 : 12,616.56 = 3,220.32 : x
  2. Step 2: Convert to fraction form
    8,412.96/12,616.56 = 3,220.32/x
  3. Step 3: Cross multiply
    8,412.96x = 12,616.56 × 3,220.32
  4. Step 4: Simplify right side
    8,412.96x = 40,629,360.50
  5. Step 5: Solve for x
    x = 40,629,360.50/8,412.96
  6. Step 6: Final answer
    x = 4,829.38

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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.