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Finding the Fourth Proportional to 2,428.92, 3,351.72 and 1,434

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Solution

The fourth proportional to 2,428.92, 3,351.72 and 1,434 is: 1,978.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,428.92 : 3,351.72 = 1,434 : x
  2. Step 2: Convert to fraction form
    2,428.92/3,351.72 = 1,434/x
  3. Step 3: Cross multiply
    2,428.92x = 3,351.72 × 1,434
  4. Step 4: Simplify right side
    2,428.92x = 4,806,366.48
  5. Step 5: Solve for x
    x = 4,806,366.48/2,428.92
  6. Step 6: Final answer
    x = 1,978.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.