Home / 1,664.59-2,496.84-431.96

Finding the Fourth Proportional to 1,664.59, 2,496.84 and 431.96

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Solution

The fourth proportional to 1,664.59, 2,496.84 and 431.96 is: 647.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,664.59 : 2,496.84 = 431.96 : x
  2. Step 2: Convert to fraction form
    1,664.59/2,496.84 = 431.96/x
  3. Step 3: Cross multiply
    1,664.59x = 2,496.84 × 431.96
  4. Step 4: Simplify right side
    1,664.59x = 1,078,535.01
  5. Step 5: Solve for x
    x = 1,078,535.01/1,664.59
  6. Step 6: Final answer
    x = 647.93

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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.