Home / 7,137.72-10,710.63-3,439.89

Finding the Fourth Proportional to 7,137.72, 10,710.63 and 3,439.89

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Solution

The fourth proportional to 7,137.72, 10,710.63 and 3,439.89 is: 5,161.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,137.72 : 10,710.63 = 3,439.89 : x
  2. Step 2: Convert to fraction form
    7,137.72/10,710.63 = 3,439.89/x
  3. Step 3: Cross multiply
    7,137.72x = 10,710.63 × 3,439.89
  4. Step 4: Simplify right side
    7,137.72x = 36,843,389.03
  5. Step 5: Solve for x
    x = 36,843,389.03/7,137.72
  6. Step 6: Final answer
    x = 5,161.79

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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.