Home / 8,086.81-12,130.21-3,639.28

Finding the Fourth Proportional to 8,086.81, 12,130.21 and 3,639.28

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Solution

The fourth proportional to 8,086.81, 12,130.21 and 3,639.28 is: 5,458.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,086.81 : 12,130.21 = 3,639.28 : x
  2. Step 2: Convert to fraction form
    8,086.81/12,130.21 = 3,639.28/x
  3. Step 3: Cross multiply
    8,086.81x = 12,130.21 × 3,639.28
  4. Step 4: Simplify right side
    8,086.81x = 44,145,170.00
  5. Step 5: Solve for x
    x = 44,145,170.00/8,086.81
  6. Step 6: Final answer
    x = 5,458.91

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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.