Home / 2,070.13-3,105.12-683.43

Finding the Fourth Proportional to 2,070.13, 3,105.12 and 683.43

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Solution

The fourth proportional to 2,070.13, 3,105.12 and 683.43 is: 1,025.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,070.13 : 3,105.12 = 683.43 : x
  2. Step 2: Convert to fraction form
    2,070.13/3,105.12 = 683.43/x
  3. Step 3: Cross multiply
    2,070.13x = 3,105.12 × 683.43
  4. Step 4: Simplify right side
    2,070.13x = 2,122,132.16
  5. Step 5: Solve for x
    x = 2,122,132.16/2,070.13
  6. Step 6: Final answer
    x = 1,025.12

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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.