Home / 5,591.25-8,390.84-2,128.50

Finding the Fourth Proportional to 5,591.25, 8,390.84 and 2,128.50

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Solution

The fourth proportional to 5,591.25, 8,390.84 and 2,128.50 is: 3,194.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,591.25 : 8,390.84 = 2,128.50 : x
  2. Step 2: Convert to fraction form
    5,591.25/8,390.84 = 2,128.50/x
  3. Step 3: Cross multiply
    5,591.25x = 8,390.84 × 2,128.50
  4. Step 4: Simplify right side
    5,591.25x = 17,859,892.30
  5. Step 5: Solve for x
    x = 17,859,892.30/5,591.25
  6. Step 6: Final answer
    x = 3,194.26

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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.