Home / 8,628.28-12,942.71-2,387.77

Finding the Fourth Proportional to 8,628.28, 12,942.71 and 2,387.77

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Solution

The fourth proportional to 8,628.28, 12,942.71 and 2,387.77 is: 3,581.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,628.28 : 12,942.71 = 2,387.77 : x
  2. Step 2: Convert to fraction form
    8,628.28/12,942.71 = 2,387.77/x
  3. Step 3: Cross multiply
    8,628.28x = 12,942.71 × 2,387.77
  4. Step 4: Simplify right side
    8,628.28x = 30,904,236.80
  5. Step 5: Solve for x
    x = 30,904,236.80/8,628.28
  6. Step 6: Final answer
    x = 3,581.74

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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.