Home / 1,086.24-1,630.96-540.28

Finding the Fourth Proportional to 1,086.24, 1,630.96 and 540.28

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Solution

The fourth proportional to 1,086.24, 1,630.96 and 540.28 is: 811.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,086.24 : 1,630.96 = 540.28 : x
  2. Step 2: Convert to fraction form
    1,086.24/1,630.96 = 540.28/x
  3. Step 3: Cross multiply
    1,086.24x = 1,630.96 × 540.28
  4. Step 4: Simplify right side
    1,086.24x = 881,175.07
  5. Step 5: Solve for x
    x = 881,175.07/1,086.24
  6. Step 6: Final answer
    x = 811.22

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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.