Home / 1,669.50-2,504.64-515.28

Finding the Fourth Proportional to 1,669.50, 2,504.64 and 515.28

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Solution

The fourth proportional to 1,669.50, 2,504.64 and 515.28 is: 773.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,669.50 : 2,504.64 = 515.28 : x
  2. Step 2: Convert to fraction form
    1,669.50/2,504.64 = 515.28/x
  3. Step 3: Cross multiply
    1,669.50x = 2,504.64 × 515.28
  4. Step 4: Simplify right side
    1,669.50x = 1,290,590.90
  5. Step 5: Solve for x
    x = 1,290,590.90/1,669.50
  6. Step 6: Final answer
    x = 773.04

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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.