Home / 7,780.37-11,668.91-2,515.91

Finding the Fourth Proportional to 7,780.37, 11,668.91 and 2,515.91

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Solution

The fourth proportional to 7,780.37, 11,668.91 and 2,515.91 is: 3,773.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,780.37 : 11,668.91 = 2,515.91 : x
  2. Step 2: Convert to fraction form
    7,780.37/11,668.91 = 2,515.91/x
  3. Step 3: Cross multiply
    7,780.37x = 11,668.91 × 2,515.91
  4. Step 4: Simplify right side
    7,780.37x = 29,357,856.43
  5. Step 5: Solve for x
    x = 29,357,856.43/7,780.37
  6. Step 6: Final answer
    x = 3,773.33

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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.