Home / 5,019.78-7,519.45-2,379.28

Finding the Fourth Proportional to 5,019.78, 7,519.45 and 2,379.28

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Solution

The fourth proportional to 5,019.78, 7,519.45 and 2,379.28 is: 3,564.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,019.78 : 7,519.45 = 2,379.28 : x
  2. Step 2: Convert to fraction form
    5,019.78/7,519.45 = 2,379.28/x
  3. Step 3: Cross multiply
    5,019.78x = 7,519.45 × 2,379.28
  4. Step 4: Simplify right side
    5,019.78x = 17,890,899.25
  5. Step 5: Solve for x
    x = 17,890,899.25/5,019.78
  6. Step 6: Final answer
    x = 3,564.08

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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.