Home / 5,479.89-8,219.62-3,630.45

Finding the Fourth Proportional to 5,479.89, 8,219.62 and 3,630.45

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Solution

The fourth proportional to 5,479.89, 8,219.62 and 3,630.45 is: 5,445.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,479.89 : 8,219.62 = 3,630.45 : x
  2. Step 2: Convert to fraction form
    5,479.89/8,219.62 = 3,630.45/x
  3. Step 3: Cross multiply
    5,479.89x = 8,219.62 × 3,630.45
  4. Step 4: Simplify right side
    5,479.89x = 29,840,919.43
  5. Step 5: Solve for x
    x = 29,840,919.43/5,479.89
  6. Step 6: Final answer
    x = 5,445.53

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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.