Home / 1,664.58-2,496.87-431.97

Finding the Fourth Proportional to 1,664.58, 2,496.87 and 431.97

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Solution

The fourth proportional to 1,664.58, 2,496.87 and 431.97 is: 647.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,664.58 : 2,496.87 = 431.97 : x
  2. Step 2: Convert to fraction form
    1,664.58/2,496.87 = 431.97/x
  3. Step 3: Cross multiply
    1,664.58x = 2,496.87 × 431.97
  4. Step 4: Simplify right side
    1,664.58x = 1,078,563.57
  5. Step 5: Solve for x
    x = 1,078,563.57/1,664.58
  6. Step 6: Final answer
    x = 647.95

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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.