Home / 1,285.32-1,929.06-516.36

Finding the Fourth Proportional to 1,285.32, 1,929.06 and 516.36

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Solution

The fourth proportional to 1,285.32, 1,929.06 and 516.36 is: 774.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,285.32 : 1,929.06 = 516.36 : x
  2. Step 2: Convert to fraction form
    1,285.32/1,929.06 = 516.36/x
  3. Step 3: Cross multiply
    1,285.32x = 1,929.06 × 516.36
  4. Step 4: Simplify right side
    1,285.32x = 996,089.42
  5. Step 5: Solve for x
    x = 996,089.42/1,285.32
  6. Step 6: Final answer
    x = 774.97

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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.