Home / 4,270.48-6,405.49-1,639.25

Finding the Fourth Proportional to 4,270.48, 6,405.49 and 1,639.25

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Solution

The fourth proportional to 4,270.48, 6,405.49 and 1,639.25 is: 2,458.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,270.48 : 6,405.49 = 1,639.25 : x
  2. Step 2: Convert to fraction form
    4,270.48/6,405.49 = 1,639.25/x
  3. Step 3: Cross multiply
    4,270.48x = 6,405.49 × 1,639.25
  4. Step 4: Simplify right side
    4,270.48x = 10,500,163.36
  5. Step 5: Solve for x
    x = 10,500,163.36/4,270.48
  6. Step 6: Final answer
    x = 2,458.78

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1.5x scale

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.