Home / 1,087.57-1,629.06-539.38

Finding the Fourth Proportional to 1,087.57, 1,629.06 and 539.38

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Solution

The fourth proportional to 1,087.57, 1,629.06 and 539.38 is: 807.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,087.57 : 1,629.06 = 539.38 : x
  2. Step 2: Convert to fraction form
    1,087.57/1,629.06 = 539.38/x
  3. Step 3: Cross multiply
    1,087.57x = 1,629.06 × 539.38
  4. Step 4: Simplify right side
    1,087.57x = 878,682.38
  5. Step 5: Solve for x
    x = 878,682.38/1,087.57
  6. Step 6: Final answer
    x = 807.93

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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.