Home / 2,000.70-3,005.30-1,221.08

Finding the Fourth Proportional to 2,000.70, 3,005.30 and 1,221.08

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Solution

The fourth proportional to 2,000.70, 3,005.30 and 1,221.08 is: 1,834.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,000.70 : 3,005.30 = 1,221.08 : x
  2. Step 2: Convert to fraction form
    2,000.70/3,005.30 = 1,221.08/x
  3. Step 3: Cross multiply
    2,000.70x = 3,005.30 × 1,221.08
  4. Step 4: Simplify right side
    2,000.70x = 3,669,699.75
  5. Step 5: Solve for x
    x = 3,669,699.75/2,000.70
  6. Step 6: Final answer
    x = 1,834.21

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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.