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Finding the Fourth Proportional to 3,477.31, 5,215.96 and 880.24

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Solution

The fourth proportional to 3,477.31, 5,215.96 and 880.24 is: 1,320.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,477.31 : 5,215.96 = 880.24 : x
  2. Step 2: Convert to fraction form
    3,477.31/5,215.96 = 880.24/x
  3. Step 3: Cross multiply
    3,477.31x = 5,215.96 × 880.24
  4. Step 4: Simplify right side
    3,477.31x = 4,591,296.63
  5. Step 5: Solve for x
    x = 4,591,296.63/3,477.31
  6. Step 6: Final answer
    x = 1,320.36

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Similar ratio
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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.