Home / 1,424.12-2,125.14-1,260.09

Finding the Fourth Proportional to 1,424.12, 2,125.14 and 1,260.09

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Solution

The fourth proportional to 1,424.12, 2,125.14 and 1,260.09 is: 1,880.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,424.12 : 2,125.14 = 1,260.09 : x
  2. Step 2: Convert to fraction form
    1,424.12/2,125.14 = 1,260.09/x
  3. Step 3: Cross multiply
    1,424.12x = 2,125.14 × 1,260.09
  4. Step 4: Simplify right side
    1,424.12x = 2,677,862.94
  5. Step 5: Solve for x
    x = 2,677,862.94/1,424.12
  6. Step 6: Final answer
    x = 1,880.37

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.