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Finding the Fourth Proportional to 3,163.99, 4,741.12 and 1,215.13

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Solution

The fourth proportional to 3,163.99, 4,741.12 and 1,215.13 is: 1,820.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,163.99 : 4,741.12 = 1,215.13 : x
  2. Step 2: Convert to fraction form
    3,163.99/4,741.12 = 1,215.13/x
  3. Step 3: Cross multiply
    3,163.99x = 4,741.12 × 1,215.13
  4. Step 4: Simplify right side
    3,163.99x = 5,761,077.15
  5. Step 5: Solve for x
    x = 5,761,077.15/3,163.99
  6. Step 6: Final answer
    x = 1,820.83

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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.