Home / 3,728.50-5,592.75-1,420.54

Finding the Fourth Proportional to 3,728.50, 5,592.75 and 1,420.54

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Solution

The fourth proportional to 3,728.50, 5,592.75 and 1,420.54 is: 2,130.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,728.50 : 5,592.75 = 1,420.54 : x
  2. Step 2: Convert to fraction form
    3,728.50/5,592.75 = 1,420.54/x
  3. Step 3: Cross multiply
    3,728.50x = 5,592.75 × 1,420.54
  4. Step 4: Simplify right side
    3,728.50x = 7,944,725.09
  5. Step 5: Solve for x
    x = 7,944,725.09/3,728.50
  6. Step 6: Final answer
    x = 2,130.81

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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.