Home / 5,511.90-8,261.70-2,388.30

Finding the Fourth Proportional to 5,511.90, 8,261.70 and 2,388.30

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Solution

The fourth proportional to 5,511.90, 8,261.70 and 2,388.30 is: 3,579.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,511.90 : 8,261.70 = 2,388.30 : x
  2. Step 2: Convert to fraction form
    5,511.90/8,261.70 = 2,388.30/x
  3. Step 3: Cross multiply
    5,511.90x = 8,261.70 × 2,388.30
  4. Step 4: Simplify right side
    5,511.90x = 19,731,418.11
  5. Step 5: Solve for x
    x = 19,731,418.11/5,511.90
  6. Step 6: Final answer
    x = 3,579.79

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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.