Home / 3,542.70-5,315.48-1,788.21

Finding the Fourth Proportional to 3,542.70, 5,315.48 and 1,788.21

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Solution

The fourth proportional to 3,542.70, 5,315.48 and 1,788.21 is: 2,683.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,542.70 : 5,315.48 = 1,788.21 : x
  2. Step 2: Convert to fraction form
    3,542.70/5,315.48 = 1,788.21/x
  3. Step 3: Cross multiply
    3,542.70x = 5,315.48 × 1,788.21
  4. Step 4: Simplify right side
    3,542.70x = 9,505,185.55
  5. Step 5: Solve for x
    x = 9,505,185.55/3,542.70
  6. Step 6: Final answer
    x = 2,683.03

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1.5x scale

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.