Home / 1,086.92-1,631.28-539.27

Finding the Fourth Proportional to 1,086.92, 1,631.28 and 539.27

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Solution

The fourth proportional to 1,086.92, 1,631.28 and 539.27 is: 809.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,086.92 : 1,631.28 = 539.27 : x
  2. Step 2: Convert to fraction form
    1,086.92/1,631.28 = 539.27/x
  3. Step 3: Cross multiply
    1,086.92x = 1,631.28 × 539.27
  4. Step 4: Simplify right side
    1,086.92x = 879,700.37
  5. Step 5: Solve for x
    x = 879,700.37/1,086.92
  6. Step 6: Final answer
    x = 809.35

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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.