Home / 6,622.35-9,909.15-3,991.47

Finding the Fourth Proportional to 6,622.35, 9,909.15 and 3,991.47

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Solution

The fourth proportional to 6,622.35, 9,909.15 and 3,991.47 is: 5,972.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,622.35 : 9,909.15 = 3,991.47 : x
  2. Step 2: Convert to fraction form
    6,622.35/9,909.15 = 3,991.47/x
  3. Step 3: Cross multiply
    6,622.35x = 9,909.15 × 3,991.47
  4. Step 4: Simplify right side
    6,622.35x = 39,552,074.95
  5. Step 5: Solve for x
    x = 39,552,074.95/6,622.35
  6. Step 6: Final answer
    x = 5,972.51

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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.