Home / 10,388.38-15,582.57-2,789.77

Finding the Fourth Proportional to 10,388.38, 15,582.57 and 2,789.77

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Solution

The fourth proportional to 10,388.38, 15,582.57 and 2,789.77 is: 4,184.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,388.38 : 15,582.57 = 2,789.77 : x
  2. Step 2: Convert to fraction form
    10,388.38/15,582.57 = 2,789.77/x
  3. Step 3: Cross multiply
    10,388.38x = 15,582.57 × 2,789.77
  4. Step 4: Simplify right side
    10,388.38x = 43,471,786.31
  5. Step 5: Solve for x
    x = 43,471,786.31/10,388.38
  6. Step 6: Final answer
    x = 4,184.66

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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.