Home / 2,784.78-4,177.20-1,324.08

Finding the Fourth Proportional to 2,784.78, 4,177.20 and 1,324.08

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Solution

The fourth proportional to 2,784.78, 4,177.20 and 1,324.08 is: 1,986.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,784.78 : 4,177.20 = 1,324.08 : x
  2. Step 2: Convert to fraction form
    2,784.78/4,177.20 = 1,324.08/x
  3. Step 3: Cross multiply
    2,784.78x = 4,177.20 × 1,324.08
  4. Step 4: Simplify right side
    2,784.78x = 5,530,946.98
  5. Step 5: Solve for x
    x = 5,530,946.98/2,784.78
  6. Step 6: Final answer
    x = 1,986.13

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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.