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Finding the Fourth Proportional to 12,788.76, 19,183.18 and 3,554.76

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Solution

The fourth proportional to 12,788.76, 19,183.18 and 3,554.76 is: 5,332.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,788.76 : 19,183.18 = 3,554.76 : x
  2. Step 2: Convert to fraction form
    12,788.76/19,183.18 = 3,554.76/x
  3. Step 3: Cross multiply
    12,788.76x = 19,183.18 × 3,554.76
  4. Step 4: Simplify right side
    12,788.76x = 68,191,600.94
  5. Step 5: Solve for x
    x = 68,191,600.94/12,788.76
  6. Step 6: Final answer
    x = 5,332.15

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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.