Home / 11,187.54-16,780.78-3,289.74

Finding the Fourth Proportional to 11,187.54, 16,780.78 and 3,289.74

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Solution

The fourth proportional to 11,187.54, 16,780.78 and 3,289.74 is: 4,934.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,187.54 : 16,780.78 = 3,289.74 : x
  2. Step 2: Convert to fraction form
    11,187.54/16,780.78 = 3,289.74/x
  3. Step 3: Cross multiply
    11,187.54x = 16,780.78 × 3,289.74
  4. Step 4: Simplify right side
    11,187.54x = 55,204,302.84
  5. Step 5: Solve for x
    x = 55,204,302.84/11,187.54
  6. Step 6: Final answer
    x = 4,934.45

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1.5x scale

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.