Home / 8,361.20-12,538.16-2,515.84

Finding the Fourth Proportional to 8,361.20, 12,538.16 and 2,515.84

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Solution

The fourth proportional to 8,361.20, 12,538.16 and 2,515.84 is: 3,772.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,361.20 : 12,538.16 = 2,515.84 : x
  2. Step 2: Convert to fraction form
    8,361.20/12,538.16 = 2,515.84/x
  3. Step 3: Cross multiply
    8,361.20x = 12,538.16 × 2,515.84
  4. Step 4: Simplify right side
    8,361.20x = 31,544,004.45
  5. Step 5: Solve for x
    x = 31,544,004.45/8,361.20
  6. Step 6: Final answer
    x = 3,772.66

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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.