Home / 8,422.29-12,630.33-2,798.94

Finding the Fourth Proportional to 8,422.29, 12,630.33 and 2,798.94

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Solution

The fourth proportional to 8,422.29, 12,630.33 and 2,798.94 is: 4,197.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,422.29 : 12,630.33 = 2,798.94 : x
  2. Step 2: Convert to fraction form
    8,422.29/12,630.33 = 2,798.94/x
  3. Step 3: Cross multiply
    8,422.29x = 12,630.33 × 2,798.94
  4. Step 4: Simplify right side
    8,422.29x = 35,351,535.85
  5. Step 5: Solve for x
    x = 35,351,535.85/8,422.29
  6. Step 6: Final answer
    x = 4,197.38

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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.