Home / 1,425.18-2,137.95-451.29

Finding the Fourth Proportional to 1,425.18, 2,137.95 and 451.29

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Solution

The fourth proportional to 1,425.18, 2,137.95 and 451.29 is: 676.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,425.18 : 2,137.95 = 451.29 : x
  2. Step 2: Convert to fraction form
    1,425.18/2,137.95 = 451.29/x
  3. Step 3: Cross multiply
    1,425.18x = 2,137.95 × 451.29
  4. Step 4: Simplify right side
    1,425.18x = 964,835.46
  5. Step 5: Solve for x
    x = 964,835.46/1,425.18
  6. Step 6: Final answer
    x = 676.99

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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.