Home / 3,145.26-4,717.96-836.76

Finding the Fourth Proportional to 3,145.26, 4,717.96 and 836.76

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Solution

The fourth proportional to 3,145.26, 4,717.96 and 836.76 is: 1,255.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,145.26 : 4,717.96 = 836.76 : x
  2. Step 2: Convert to fraction form
    3,145.26/4,717.96 = 836.76/x
  3. Step 3: Cross multiply
    3,145.26x = 4,717.96 × 836.76
  4. Step 4: Simplify right side
    3,145.26x = 3,947,800.21
  5. Step 5: Solve for x
    x = 3,947,800.21/3,145.26
  6. Step 6: Final answer
    x = 1,255.16

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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.