Home / 1,639.36-2,459.00-406.76

Finding the Fourth Proportional to 1,639.36, 2,459.00 and 406.76

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Solution

The fourth proportional to 1,639.36, 2,459.00 and 406.76 is: 610.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,639.36 : 2,459.00 = 406.76 : x
  2. Step 2: Convert to fraction form
    1,639.36/2,459.00 = 406.76/x
  3. Step 3: Cross multiply
    1,639.36x = 2,459.00 × 406.76
  4. Step 4: Simplify right side
    1,639.36x = 1,000,221.65
  5. Step 5: Solve for x
    x = 1,000,221.65/1,639.36
  6. Step 6: Final answer
    x = 610.13

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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.