Home / 2,154.49-3,227.46-1,421.85

Finding the Fourth Proportional to 2,154.49, 3,227.46 and 1,421.85

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Solution

The fourth proportional to 2,154.49, 3,227.46 and 1,421.85 is: 2,129.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,154.49 : 3,227.46 = 1,421.85 : x
  2. Step 2: Convert to fraction form
    2,154.49/3,227.46 = 1,421.85/x
  3. Step 3: Cross multiply
    2,154.49x = 3,227.46 × 1,421.85
  4. Step 4: Simplify right side
    2,154.49x = 4,588,964.00
  5. Step 5: Solve for x
    x = 4,588,964.00/2,154.49
  6. Step 6: Final answer
    x = 2,129.95

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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.