Home / 7,414.20-11,115.90-3,029.40

Finding the Fourth Proportional to 7,414.20, 11,115.90 and 3,029.40

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Solution

The fourth proportional to 7,414.20, 11,115.90 and 3,029.40 is: 4,541.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,414.20 : 11,115.90 = 3,029.40 : x
  2. Step 2: Convert to fraction form
    7,414.20/11,115.90 = 3,029.40/x
  3. Step 3: Cross multiply
    7,414.20x = 11,115.90 × 3,029.40
  4. Step 4: Simplify right side
    7,414.20x = 33,674,507.46
  5. Step 5: Solve for x
    x = 33,674,507.46/7,414.20
  6. Step 6: Final answer
    x = 4,541.89

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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.