Home / 1,861.15-2,792.04-628.57

Finding the Fourth Proportional to 1,861.15, 2,792.04 and 628.57

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Solution

The fourth proportional to 1,861.15, 2,792.04 and 628.57 is: 942.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,861.15 : 2,792.04 = 628.57 : x
  2. Step 2: Convert to fraction form
    1,861.15/2,792.04 = 628.57/x
  3. Step 3: Cross multiply
    1,861.15x = 2,792.04 × 628.57
  4. Step 4: Simplify right side
    1,861.15x = 1,754,992.58
  5. Step 5: Solve for x
    x = 1,754,992.58/1,861.15
  6. Step 6: Final answer
    x = 942.96

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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.