Home / 2,213.12-3,321.18-914.58

Finding the Fourth Proportional to 2,213.12, 3,321.18 and 914.58

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Solution

The fourth proportional to 2,213.12, 3,321.18 and 914.58 is: 1,372.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,213.12 : 3,321.18 = 914.58 : x
  2. Step 2: Convert to fraction form
    2,213.12/3,321.18 = 914.58/x
  3. Step 3: Cross multiply
    2,213.12x = 3,321.18 × 914.58
  4. Step 4: Simplify right side
    2,213.12x = 3,037,484.80
  5. Step 5: Solve for x
    x = 3,037,484.80/2,213.12
  6. Step 6: Final answer
    x = 1,372.49

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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.