Home / 8,909.42-13,355.30-4,221.18

Finding the Fourth Proportional to 8,909.42, 13,355.30 and 4,221.18

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Solution

The fourth proportional to 8,909.42, 13,355.30 and 4,221.18 is: 6,327.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,909.42 : 13,355.30 = 4,221.18 : x
  2. Step 2: Convert to fraction form
    8,909.42/13,355.30 = 4,221.18/x
  3. Step 3: Cross multiply
    8,909.42x = 13,355.30 × 4,221.18
  4. Step 4: Simplify right side
    8,909.42x = 56,375,104.15
  5. Step 5: Solve for x
    x = 56,375,104.15/8,909.42
  6. Step 6: Final answer
    x = 6,327.59

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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.