Home / 8,419.04-12,630.96-3,422.96

Finding the Fourth Proportional to 8,419.04, 12,630.96 and 3,422.96

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Solution

The fourth proportional to 8,419.04, 12,630.96 and 3,422.96 is: 5,135.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,419.04 : 12,630.96 = 3,422.96 : x
  2. Step 2: Convert to fraction form
    8,419.04/12,630.96 = 3,422.96/x
  3. Step 3: Cross multiply
    8,419.04x = 12,630.96 × 3,422.96
  4. Step 4: Simplify right side
    8,419.04x = 43,235,270.84
  5. Step 5: Solve for x
    x = 43,235,270.84/8,419.04
  6. Step 6: Final answer
    x = 5,135.42

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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.