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Finding the Fourth Proportional to 8,483.56, 12,720.51 and 3,484.51

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Solution

The fourth proportional to 8,483.56, 12,720.51 and 3,484.51 is: 5,224.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,483.56 : 12,720.51 = 3,484.51 : x
  2. Step 2: Convert to fraction form
    8,483.56/12,720.51 = 3,484.51/x
  3. Step 3: Cross multiply
    8,483.56x = 12,720.51 × 3,484.51
  4. Step 4: Simplify right side
    8,483.56x = 44,324,744.30
  5. Step 5: Solve for x
    x = 44,324,744.30/8,483.56
  6. Step 6: Final answer
    x = 5,224.78

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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.