Home / 2,073.11-3,109.67-1,421.87

Finding the Fourth Proportional to 2,073.11, 3,109.67 and 1,421.87

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Solution

The fourth proportional to 2,073.11, 3,109.67 and 1,421.87 is: 2,132.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,073.11 : 3,109.67 = 1,421.87 : x
  2. Step 2: Convert to fraction form
    2,073.11/3,109.67 = 1,421.87/x
  3. Step 3: Cross multiply
    2,073.11x = 3,109.67 × 1,421.87
  4. Step 4: Simplify right side
    2,073.11x = 4,421,539.37
  5. Step 5: Solve for x
    x = 4,421,539.37/2,073.11
  6. Step 6: Final answer
    x = 2,132.81

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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.