Home / 7,682.72-11,521.64-2,487.38

Finding the Fourth Proportional to 7,682.72, 11,521.64 and 2,487.38

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Solution

The fourth proportional to 7,682.72, 11,521.64 and 2,487.38 is: 3,730.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,682.72 : 11,521.64 = 2,487.38 : x
  2. Step 2: Convert to fraction form
    7,682.72/11,521.64 = 2,487.38/x
  3. Step 3: Cross multiply
    7,682.72x = 11,521.64 × 2,487.38
  4. Step 4: Simplify right side
    7,682.72x = 28,658,645.51
  5. Step 5: Solve for x
    x = 28,658,645.51/7,682.72
  6. Step 6: Final answer
    x = 3,730.28

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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.