Home / 1,669.88-2,505.23-515.63

Finding the Fourth Proportional to 1,669.88, 2,505.23 and 515.63

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Solution

The fourth proportional to 1,669.88, 2,505.23 and 515.63 is: 773.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,669.88 : 2,505.23 = 515.63 : x
  2. Step 2: Convert to fraction form
    1,669.88/2,505.23 = 515.63/x
  3. Step 3: Cross multiply
    1,669.88x = 2,505.23 × 515.63
  4. Step 4: Simplify right side
    1,669.88x = 1,291,756.64
  5. Step 5: Solve for x
    x = 1,291,756.64/1,669.88
  6. Step 6: Final answer
    x = 773.56

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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.