Home / 5,420.32-8,133.21-2,135.77

Finding the Fourth Proportional to 5,420.32, 8,133.21 and 2,135.77

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Solution

The fourth proportional to 5,420.32, 8,133.21 and 2,135.77 is: 3,204.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,420.32 : 8,133.21 = 2,135.77 : x
  2. Step 2: Convert to fraction form
    5,420.32/8,133.21 = 2,135.77/x
  3. Step 3: Cross multiply
    5,420.32x = 8,133.21 × 2,135.77
  4. Step 4: Simplify right side
    5,420.32x = 17,370,645.59
  5. Step 5: Solve for x
    x = 17,370,645.59/5,420.32
  6. Step 6: Final answer
    x = 3,204.73

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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.