Home / 5,190.78-7,788.91-2,271.14

Finding the Fourth Proportional to 5,190.78, 7,788.91 and 2,271.14

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Solution

The fourth proportional to 5,190.78, 7,788.91 and 2,271.14 is: 3,407.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,190.78 : 7,788.91 = 2,271.14 : x
  2. Step 2: Convert to fraction form
    5,190.78/7,788.91 = 2,271.14/x
  3. Step 3: Cross multiply
    5,190.78x = 7,788.91 × 2,271.14
  4. Step 4: Simplify right side
    5,190.78x = 17,689,679.91
  5. Step 5: Solve for x
    x = 17,689,679.91/5,190.78
  6. Step 6: Final answer
    x = 3,407.90

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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.