Home / 2,630.20-3,945.30-2,529.40

Finding the Fourth Proportional to 2,630.20, 3,945.30 and 2,529.40

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Solution

The fourth proportional to 2,630.20, 3,945.30 and 2,529.40 is: 3,794.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,630.20 : 3,945.30 = 2,529.40 : x
  2. Step 2: Convert to fraction form
    2,630.20/3,945.30 = 2,529.40/x
  3. Step 3: Cross multiply
    2,630.20x = 3,945.30 × 2,529.40
  4. Step 4: Simplify right side
    2,630.20x = 9,979,241.82
  5. Step 5: Solve for x
    x = 9,979,241.82/2,630.20
  6. Step 6: Final answer
    x = 3,794.10

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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.