Home / 5,109.22-7,678.41-2,513.98

Finding the Fourth Proportional to 5,109.22, 7,678.41 and 2,513.98

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Solution

The fourth proportional to 5,109.22, 7,678.41 and 2,513.98 is: 3,778.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,109.22 : 7,678.41 = 2,513.98 : x
  2. Step 2: Convert to fraction form
    5,109.22/7,678.41 = 2,513.98/x
  3. Step 3: Cross multiply
    5,109.22x = 7,678.41 × 2,513.98
  4. Step 4: Simplify right side
    5,109.22x = 19,303,369.17
  5. Step 5: Solve for x
    x = 19,303,369.17/5,109.22
  6. Step 6: Final answer
    x = 3,778.14

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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.