Home / 2,428.32-3,351.36-1,380.48

Finding the Fourth Proportional to 2,428.32, 3,351.36 and 1,380.48

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Solution

The fourth proportional to 2,428.32, 3,351.36 and 1,380.48 is: 1,905.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,428.32 : 3,351.36 = 1,380.48 : x
  2. Step 2: Convert to fraction form
    2,428.32/3,351.36 = 1,380.48/x
  3. Step 3: Cross multiply
    2,428.32x = 3,351.36 × 1,380.48
  4. Step 4: Simplify right side
    2,428.32x = 4,626,485.45
  5. Step 5: Solve for x
    x = 4,626,485.45/2,428.32
  6. Step 6: Final answer
    x = 1,905.22

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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.