Home / 5,475.20-8,210.88-2,189.44

Finding the Fourth Proportional to 5,475.20, 8,210.88 and 2,189.44

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Solution

The fourth proportional to 5,475.20, 8,210.88 and 2,189.44 is: 3,283.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,475.20 : 8,210.88 = 2,189.44 : x
  2. Step 2: Convert to fraction form
    5,475.20/8,210.88 = 2,189.44/x
  3. Step 3: Cross multiply
    5,475.20x = 8,210.88 × 2,189.44
  4. Step 4: Simplify right side
    5,475.20x = 17,977,229.11
  5. Step 5: Solve for x
    x = 17,977,229.11/5,475.20
  6. Step 6: Final answer
    x = 3,283.39

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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.