Home / 8,188.28-12,271.58-2,989.16

Finding the Fourth Proportional to 8,188.28, 12,271.58 and 2,989.16

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Solution

The fourth proportional to 8,188.28, 12,271.58 and 2,989.16 is: 4,479.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,188.28 : 12,271.58 = 2,989.16 : x
  2. Step 2: Convert to fraction form
    8,188.28/12,271.58 = 2,989.16/x
  3. Step 3: Cross multiply
    8,188.28x = 12,271.58 × 2,989.16
  4. Step 4: Simplify right side
    8,188.28x = 36,681,716.07
  5. Step 5: Solve for x
    x = 36,681,716.07/8,188.28
  6. Step 6: Final answer
    x = 4,479.78

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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.