Home / 2,133.90-3,202.65-1,039.20

Finding the Fourth Proportional to 2,133.90, 3,202.65 and 1,039.20

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Solution

The fourth proportional to 2,133.90, 3,202.65 and 1,039.20 is: 1,559.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,133.90 : 3,202.65 = 1,039.20 : x
  2. Step 2: Convert to fraction form
    2,133.90/3,202.65 = 1,039.20/x
  3. Step 3: Cross multiply
    2,133.90x = 3,202.65 × 1,039.20
  4. Step 4: Simplify right side
    2,133.90x = 3,328,193.88
  5. Step 5: Solve for x
    x = 3,328,193.88/2,133.90
  6. Step 6: Final answer
    x = 1,559.68

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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.