Home / 3,505.59-5,255.13-1,315.77

Finding the Fourth Proportional to 3,505.59, 5,255.13 and 1,315.77

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Solution

The fourth proportional to 3,505.59, 5,255.13 and 1,315.77 is: 1,972.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,505.59 : 5,255.13 = 1,315.77 : x
  2. Step 2: Convert to fraction form
    3,505.59/5,255.13 = 1,315.77/x
  3. Step 3: Cross multiply
    3,505.59x = 5,255.13 × 1,315.77
  4. Step 4: Simplify right side
    3,505.59x = 6,914,542.40
  5. Step 5: Solve for x
    x = 6,914,542.40/3,505.59
  6. Step 6: Final answer
    x = 1,972.43

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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.