Home / 2,217.21-3,056.90-1,817.39

Finding the Fourth Proportional to 2,217.21, 3,056.90 and 1,817.39

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Solution

The fourth proportional to 2,217.21, 3,056.90 and 1,817.39 is: 2,505.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,217.21 : 3,056.90 = 1,817.39 : x
  2. Step 2: Convert to fraction form
    2,217.21/3,056.90 = 1,817.39/x
  3. Step 3: Cross multiply
    2,217.21x = 3,056.90 × 1,817.39
  4. Step 4: Simplify right side
    2,217.21x = 5,555,555.12
  5. Step 5: Solve for x
    x = 5,555,555.12/2,217.21
  6. Step 6: Final answer
    x = 2,505.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.