Home / 1,350.42-2,025.36-425.82

Finding the Fourth Proportional to 1,350.42, 2,025.36 and 425.82

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Solution

The fourth proportional to 1,350.42, 2,025.36 and 425.82 is: 638.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,350.42 : 2,025.36 = 425.82 : x
  2. Step 2: Convert to fraction form
    1,350.42/2,025.36 = 425.82/x
  3. Step 3: Cross multiply
    1,350.42x = 2,025.36 × 425.82
  4. Step 4: Simplify right side
    1,350.42x = 862,438.80
  5. Step 5: Solve for x
    x = 862,438.80/1,350.42
  6. Step 6: Final answer
    x = 638.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.