Home / 5,511.20-8,261.40-4,855.10

Finding the Fourth Proportional to 5,511.20, 8,261.40 and 4,855.10

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Solution

The fourth proportional to 5,511.20, 8,261.40 and 4,855.10 is: 7,277.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,511.20 : 8,261.40 = 4,855.10 : x
  2. Step 2: Convert to fraction form
    5,511.20/8,261.40 = 4,855.10/x
  3. Step 3: Cross multiply
    5,511.20x = 8,261.40 × 4,855.10
  4. Step 4: Simplify right side
    5,511.20x = 40,109,923.14
  5. Step 5: Solve for x
    x = 40,109,923.14/5,511.20
  6. Step 6: Final answer
    x = 7,277.89

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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.