Home / 1,513.50-2,268.63-635.78

Finding the Fourth Proportional to 1,513.50, 2,268.63 and 635.78

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Solution

The fourth proportional to 1,513.50, 2,268.63 and 635.78 is: 952.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,513.50 : 2,268.63 = 635.78 : x
  2. Step 2: Convert to fraction form
    1,513.50/2,268.63 = 635.78/x
  3. Step 3: Cross multiply
    1,513.50x = 2,268.63 × 635.78
  4. Step 4: Simplify right side
    1,513.50x = 1,442,355.25
  5. Step 5: Solve for x
    x = 1,442,355.25/1,513.50
  6. Step 6: Final answer
    x = 952.99

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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.