Home / 2,130.22-3,191.91-1,399.24

Finding the Fourth Proportional to 2,130.22, 3,191.91 and 1,399.24

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Solution

The fourth proportional to 2,130.22, 3,191.91 and 1,399.24 is: 2,096.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,130.22 : 3,191.91 = 1,399.24 : x
  2. Step 2: Convert to fraction form
    2,130.22/3,191.91 = 1,399.24/x
  3. Step 3: Cross multiply
    2,130.22x = 3,191.91 × 1,399.24
  4. Step 4: Simplify right side
    2,130.22x = 4,466,248.15
  5. Step 5: Solve for x
    x = 4,466,248.15/2,130.22
  6. Step 6: Final answer
    x = 2,096.61

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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.