Home / 3,213.60-4,814.68-1,478.56

Finding the Fourth Proportional to 3,213.60, 4,814.68 and 1,478.56

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Solution

The fourth proportional to 3,213.60, 4,814.68 and 1,478.56 is: 2,215.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,213.60 : 4,814.68 = 1,478.56 : x
  2. Step 2: Convert to fraction form
    3,213.60/4,814.68 = 1,478.56/x
  3. Step 3: Cross multiply
    3,213.60x = 4,814.68 × 1,478.56
  4. Step 4: Simplify right side
    3,213.60x = 7,118,793.26
  5. Step 5: Solve for x
    x = 7,118,793.26/3,213.60
  6. Step 6: Final answer
    x = 2,215.21

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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.