Home / 2,148.03-3,225.20-1,323.90

Finding the Fourth Proportional to 2,148.03, 3,225.20 and 1,323.90

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Solution

The fourth proportional to 2,148.03, 3,225.20 and 1,323.90 is: 1,987.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,148.03 : 3,225.20 = 1,323.90 : x
  2. Step 2: Convert to fraction form
    2,148.03/3,225.20 = 1,323.90/x
  3. Step 3: Cross multiply
    2,148.03x = 3,225.20 × 1,323.90
  4. Step 4: Simplify right side
    2,148.03x = 4,269,835.66
  5. Step 5: Solve for x
    x = 4,269,835.66/2,148.03
  6. Step 6: Final answer
    x = 1,987.79

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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.