Home / 8,627.40-12,942.36-2,785.68

Finding the Fourth Proportional to 8,627.40, 12,942.36 and 2,785.68

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Solution

The fourth proportional to 8,627.40, 12,942.36 and 2,785.68 is: 4,178.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,627.40 : 12,942.36 = 2,785.68 : x
  2. Step 2: Convert to fraction form
    8,627.40/12,942.36 = 2,785.68/x
  3. Step 3: Cross multiply
    8,627.40x = 12,942.36 × 2,785.68
  4. Step 4: Simplify right side
    8,627.40x = 36,053,273.40
  5. Step 5: Solve for x
    x = 36,053,273.40/8,627.40
  6. Step 6: Final answer
    x = 4,178.93

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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.