Home / 5,640.20-8,459.04-2,130.60

Finding the Fourth Proportional to 5,640.20, 8,459.04 and 2,130.60

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Solution

The fourth proportional to 5,640.20, 8,459.04 and 2,130.60 is: 3,195.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,640.20 : 8,459.04 = 2,130.60 : x
  2. Step 2: Convert to fraction form
    5,640.20/8,459.04 = 2,130.60/x
  3. Step 3: Cross multiply
    5,640.20x = 8,459.04 × 2,130.60
  4. Step 4: Simplify right side
    5,640.20x = 18,022,830.62
  5. Step 5: Solve for x
    x = 18,022,830.62/5,640.20
  6. Step 6: Final answer
    x = 3,195.42

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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.