Home / 2,814.10-4,221.15-1,720.60

Finding the Fourth Proportional to 2,814.10, 4,221.15 and 1,720.60

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Solution

The fourth proportional to 2,814.10, 4,221.15 and 1,720.60 is: 2,580.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,814.10 : 4,221.15 = 1,720.60 : x
  2. Step 2: Convert to fraction form
    2,814.10/4,221.15 = 1,720.60/x
  3. Step 3: Cross multiply
    2,814.10x = 4,221.15 × 1,720.60
  4. Step 4: Simplify right side
    2,814.10x = 7,262,910.69
  5. Step 5: Solve for x
    x = 7,262,910.69/2,814.10
  6. Step 6: Final answer
    x = 2,580.90

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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.