Home / 1,421.01-2,131.41-873.27

Finding the Fourth Proportional to 1,421.01, 2,131.41 and 873.27

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Solution

The fourth proportional to 1,421.01, 2,131.41 and 873.27 is: 1,309.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421.01 : 2,131.41 = 873.27 : x
  2. Step 2: Convert to fraction form
    1,421.01/2,131.41 = 873.27/x
  3. Step 3: Cross multiply
    1,421.01x = 2,131.41 × 873.27
  4. Step 4: Simplify right side
    1,421.01x = 1,861,296.41
  5. Step 5: Solve for x
    x = 1,861,296.41/1,421.01
  6. Step 6: Final answer
    x = 1,309.84

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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.