Home / 1,669.56-2,504.75-515.31

Finding the Fourth Proportional to 1,669.56, 2,504.75 and 515.31

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Solution

The fourth proportional to 1,669.56, 2,504.75 and 515.31 is: 773.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,669.56 : 2,504.75 = 515.31 : x
  2. Step 2: Convert to fraction form
    1,669.56/2,504.75 = 515.31/x
  3. Step 3: Cross multiply
    1,669.56x = 2,504.75 × 515.31
  4. Step 4: Simplify right side
    1,669.56x = 1,290,728.98
  5. Step 5: Solve for x
    x = 1,290,728.98/1,669.56
  6. Step 6: Final answer
    x = 773.09

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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.