Home / 1,669.42-2,504.27-515.17

Finding the Fourth Proportional to 1,669.42, 2,504.27 and 515.17

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Solution

The fourth proportional to 1,669.42, 2,504.27 and 515.17 is: 772.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,669.42 : 2,504.27 = 515.17 : x
  2. Step 2: Convert to fraction form
    1,669.42/2,504.27 = 515.17/x
  3. Step 3: Cross multiply
    1,669.42x = 2,504.27 × 515.17
  4. Step 4: Simplify right side
    1,669.42x = 1,290,124.78
  5. Step 5: Solve for x
    x = 1,290,124.78/1,669.42
  6. Step 6: Final answer
    x = 772.80

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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.