Home / 8,691.96-13,037.86-3,143.23

Finding the Fourth Proportional to 8,691.96, 13,037.86 and 3,143.23

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Solution

The fourth proportional to 8,691.96, 13,037.86 and 3,143.23 is: 4,714.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,691.96 : 13,037.86 = 3,143.23 : x
  2. Step 2: Convert to fraction form
    8,691.96/13,037.86 = 3,143.23/x
  3. Step 3: Cross multiply
    8,691.96x = 13,037.86 × 3,143.23
  4. Step 4: Simplify right side
    8,691.96x = 40,980,992.69
  5. Step 5: Solve for x
    x = 40,980,992.69/8,691.96
  6. Step 6: Final answer
    x = 4,714.82

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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.