Home / 3,760.62-5,639.37-1,420.22

Finding the Fourth Proportional to 3,760.62, 5,639.37 and 1,420.22

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Solution

The fourth proportional to 3,760.62, 5,639.37 and 1,420.22 is: 2,129.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,760.62 : 5,639.37 = 1,420.22 : x
  2. Step 2: Convert to fraction form
    3,760.62/5,639.37 = 1,420.22/x
  3. Step 3: Cross multiply
    3,760.62x = 5,639.37 × 1,420.22
  4. Step 4: Simplify right side
    3,760.62x = 8,009,117.86
  5. Step 5: Solve for x
    x = 8,009,117.86/3,760.62
  6. Step 6: Final answer
    x = 2,129.73

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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.