Home / 2,428.12-3,351.09-1,380.34

Finding the Fourth Proportional to 2,428.12, 3,351.09 and 1,380.34

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Solution

The fourth proportional to 2,428.12, 3,351.09 and 1,380.34 is: 1,905.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,428.12 : 3,351.09 = 1,380.34 : x
  2. Step 2: Convert to fraction form
    2,428.12/3,351.09 = 1,380.34/x
  3. Step 3: Cross multiply
    2,428.12x = 3,351.09 × 1,380.34
  4. Step 4: Simplify right side
    2,428.12x = 4,625,643.57
  5. Step 5: Solve for x
    x = 4,625,643.57/2,428.12
  6. Step 6: Final answer
    x = 1,905.03

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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.