Home / 1,086.12-1,629.96-538.56

Finding the Fourth Proportional to 1,086.12, 1,629.96 and 538.56

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Solution

The fourth proportional to 1,086.12, 1,629.96 and 538.56 is: 808.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,086.12 : 1,629.96 = 538.56 : x
  2. Step 2: Convert to fraction form
    1,086.12/1,629.96 = 538.56/x
  3. Step 3: Cross multiply
    1,086.12x = 1,629.96 × 538.56
  4. Step 4: Simplify right side
    1,086.12x = 877,831.26
  5. Step 5: Solve for x
    x = 877,831.26/1,086.12
  6. Step 6: Final answer
    x = 808.23

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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.