Home / 3,112.85-4,670.11-1,265.25

Finding the Fourth Proportional to 3,112.85, 4,670.11 and 1,265.25

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Solution

The fourth proportional to 3,112.85, 4,670.11 and 1,265.25 is: 1,898.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,112.85 : 4,670.11 = 1,265.25 : x
  2. Step 2: Convert to fraction form
    3,112.85/4,670.11 = 1,265.25/x
  3. Step 3: Cross multiply
    3,112.85x = 4,670.11 × 1,265.25
  4. Step 4: Simplify right side
    3,112.85x = 5,908,856.68
  5. Step 5: Solve for x
    x = 5,908,856.68/3,112.85
  6. Step 6: Final answer
    x = 1,898.21

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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.