Home / 8,327.36-12,489.42-3,132.20

Finding the Fourth Proportional to 8,327.36, 12,489.42 and 3,132.20

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Solution

The fourth proportional to 8,327.36, 12,489.42 and 3,132.20 is: 4,697.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,327.36 : 12,489.42 = 3,132.20 : x
  2. Step 2: Convert to fraction form
    8,327.36/12,489.42 = 3,132.20/x
  3. Step 3: Cross multiply
    8,327.36x = 12,489.42 × 3,132.20
  4. Step 4: Simplify right side
    8,327.36x = 39,119,361.32
  5. Step 5: Solve for x
    x = 39,119,361.32/8,327.36
  6. Step 6: Final answer
    x = 4,697.69

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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.