Home / 1,891.46-2,834.60-1,428.86

Finding the Fourth Proportional to 1,891.46, 2,834.60 and 1,428.86

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Solution

The fourth proportional to 1,891.46, 2,834.60 and 1,428.86 is: 2,141.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,891.46 : 2,834.60 = 1,428.86 : x
  2. Step 2: Convert to fraction form
    1,891.46/2,834.60 = 1,428.86/x
  3. Step 3: Cross multiply
    1,891.46x = 2,834.60 × 1,428.86
  4. Step 4: Simplify right side
    1,891.46x = 4,050,225.24
  5. Step 5: Solve for x
    x = 4,050,225.24/1,891.46
  6. Step 6: Final answer
    x = 2,141.33

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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.