Home / 8,422.60-12,621-4,250.98

Finding the Fourth Proportional to 8,422.60, 12,621 and 4,250.98

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Solution

The fourth proportional to 8,422.60, 12,621 and 4,250.98 is: 6,369.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,422.60 : 12,621 = 4,250.98 : x
  2. Step 2: Convert to fraction form
    8,422.60/12,621 = 4,250.98/x
  3. Step 3: Cross multiply
    8,422.60x = 12,621 × 4,250.98
  4. Step 4: Simplify right side
    8,422.60x = 53,651,618.58
  5. Step 5: Solve for x
    x = 53,651,618.58/8,422.60
  6. Step 6: Final answer
    x = 6,369.96

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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.