Home / 2,428.60-3,351.63-1,380.73

Finding the Fourth Proportional to 2,428.60, 3,351.63 and 1,380.73

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Solution

The fourth proportional to 2,428.60, 3,351.63 and 1,380.73 is: 1,905.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,428.60 : 3,351.63 = 1,380.73 : x
  2. Step 2: Convert to fraction form
    2,428.60/3,351.63 = 1,380.73/x
  3. Step 3: Cross multiply
    2,428.60x = 3,351.63 × 1,380.73
  4. Step 4: Simplify right side
    2,428.60x = 4,627,696.09
  5. Step 5: Solve for x
    x = 4,627,696.09/2,428.60
  6. Step 6: Final answer
    x = 1,905.50

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1.5x scale

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.