Home / 8,638.38-12,959.49-2,794.86

Finding the Fourth Proportional to 8,638.38, 12,959.49 and 2,794.86

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Solution

The fourth proportional to 8,638.38, 12,959.49 and 2,794.86 is: 4,192.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,638.38 : 12,959.49 = 2,794.86 : x
  2. Step 2: Convert to fraction form
    8,638.38/12,959.49 = 2,794.86/x
  3. Step 3: Cross multiply
    8,638.38x = 12,959.49 × 2,794.86
  4. Step 4: Simplify right side
    8,638.38x = 36,219,960.22
  5. Step 5: Solve for x
    x = 36,219,960.22/8,638.38
  6. Step 6: Final answer
    x = 4,192.91

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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.