Home / 7,780.65-11,671.88-2,516.05

Finding the Fourth Proportional to 7,780.65, 11,671.88 and 2,516.05

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Solution

The fourth proportional to 7,780.65, 11,671.88 and 2,516.05 is: 3,774.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,780.65 : 11,671.88 = 2,516.05 : x
  2. Step 2: Convert to fraction form
    7,780.65/11,671.88 = 2,516.05/x
  3. Step 3: Cross multiply
    7,780.65x = 11,671.88 × 2,516.05
  4. Step 4: Simplify right side
    7,780.65x = 29,367,033.67
  5. Step 5: Solve for x
    x = 29,367,033.67/7,780.65
  6. Step 6: Final answer
    x = 3,774.37

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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.