Home / 5,412.20-8,127.90-4,182.60

Finding the Fourth Proportional to 5,412.20, 8,127.90 and 4,182.60

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Solution

The fourth proportional to 5,412.20, 8,127.90 and 4,182.60 is: 6,281.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,412.20 : 8,127.90 = 4,182.60 : x
  2. Step 2: Convert to fraction form
    5,412.20/8,127.90 = 4,182.60/x
  3. Step 3: Cross multiply
    5,412.20x = 8,127.90 × 4,182.60
  4. Step 4: Simplify right side
    5,412.20x = 33,995,754.54
  5. Step 5: Solve for x
    x = 33,995,754.54/5,412.20
  6. Step 6: Final answer
    x = 6,281.32

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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.