Home / 2,428.62-3,351.51-1,380.66

Finding the Fourth Proportional to 2,428.62, 3,351.51 and 1,380.66

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Solution

The fourth proportional to 2,428.62, 3,351.51 and 1,380.66 is: 1,905.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,428.62 : 3,351.51 = 1,380.66 : x
  2. Step 2: Convert to fraction form
    2,428.62/3,351.51 = 1,380.66/x
  3. Step 3: Cross multiply
    2,428.62x = 3,351.51 × 1,380.66
  4. Step 4: Simplify right side
    2,428.62x = 4,627,295.80
  5. Step 5: Solve for x
    x = 4,627,295.80/2,428.62
  6. Step 6: Final answer
    x = 1,905.32

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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.