Home / 7,780.11-11,671.68-2,516.42

Finding the Fourth Proportional to 7,780.11, 11,671.68 and 2,516.42

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Solution

The fourth proportional to 7,780.11, 11,671.68 and 2,516.42 is: 3,775.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,780.11 : 11,671.68 = 2,516.42 : x
  2. Step 2: Convert to fraction form
    7,780.11/11,671.68 = 2,516.42/x
  3. Step 3: Cross multiply
    7,780.11x = 11,671.68 × 2,516.42
  4. Step 4: Simplify right side
    7,780.11x = 29,370,848.99
  5. Step 5: Solve for x
    x = 29,370,848.99/7,780.11
  6. Step 6: Final answer
    x = 3,775.12

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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.