Home / 2,428.36-3,351.15-1,380.46

Finding the Fourth Proportional to 2,428.36, 3,351.15 and 1,380.46

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Solution

The fourth proportional to 2,428.36, 3,351.15 and 1,380.46 is: 1,905.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,428.36 : 3,351.15 = 1,380.46 : x
  2. Step 2: Convert to fraction form
    2,428.36/3,351.15 = 1,380.46/x
  3. Step 3: Cross multiply
    2,428.36x = 3,351.15 × 1,380.46
  4. Step 4: Simplify right side
    2,428.36x = 4,626,128.53
  5. Step 5: Solve for x
    x = 4,626,128.53/2,428.36
  6. Step 6: Final answer
    x = 1,905.04

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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.