Home / 7,764.16-11,645.94-1,920.64

Finding the Fourth Proportional to 7,764.16, 11,645.94 and 1,920.64

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Solution

The fourth proportional to 7,764.16, 11,645.94 and 1,920.64 is: 2,880.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,764.16 : 11,645.94 = 1,920.64 : x
  2. Step 2: Convert to fraction form
    7,764.16/11,645.94 = 1,920.64/x
  3. Step 3: Cross multiply
    7,764.16x = 11,645.94 × 1,920.64
  4. Step 4: Simplify right side
    7,764.16x = 22,367,658.20
  5. Step 5: Solve for x
    x = 22,367,658.20/7,764.16
  6. Step 6: Final answer
    x = 2,880.89

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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.