Home / 1,425.10-2,137.46-451.30

Finding the Fourth Proportional to 1,425.10, 2,137.46 and 451.30

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Solution

The fourth proportional to 1,425.10, 2,137.46 and 451.30 is: 676.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,425.10 : 2,137.46 = 451.30 : x
  2. Step 2: Convert to fraction form
    1,425.10/2,137.46 = 451.30/x
  3. Step 3: Cross multiply
    1,425.10x = 2,137.46 × 451.30
  4. Step 4: Simplify right side
    1,425.10x = 964,635.70
  5. Step 5: Solve for x
    x = 964,635.70/1,425.10
  6. Step 6: Final answer
    x = 676.89

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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.