Home / 3,191.32-4,785.36-1,459

Finding the Fourth Proportional to 3,191.32, 4,785.36 and 1,459

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Solution

The fourth proportional to 3,191.32, 4,785.36 and 1,459 is: 2,187.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,191.32 : 4,785.36 = 1,459 : x
  2. Step 2: Convert to fraction form
    3,191.32/4,785.36 = 1,459/x
  3. Step 3: Cross multiply
    3,191.32x = 4,785.36 × 1,459
  4. Step 4: Simplify right side
    3,191.32x = 6,981,840.24
  5. Step 5: Solve for x
    x = 6,981,840.24/3,191.32
  6. Step 6: Final answer
    x = 2,187.76

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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.