Home / 1,282.18-1,923.46-551.76

Finding the Fourth Proportional to 1,282.18, 1,923.46 and 551.76

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Solution

The fourth proportional to 1,282.18, 1,923.46 and 551.76 is: 827.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,282.18 : 1,923.46 = 551.76 : x
  2. Step 2: Convert to fraction form
    1,282.18/1,923.46 = 551.76/x
  3. Step 3: Cross multiply
    1,282.18x = 1,923.46 × 551.76
  4. Step 4: Simplify right side
    1,282.18x = 1,061,288.29
  5. Step 5: Solve for x
    x = 1,061,288.29/1,282.18
  6. Step 6: Final answer
    x = 827.72

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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.