Home / 7,140.20-10,710.72-2,757.68

Finding the Fourth Proportional to 7,140.20, 10,710.72 and 2,757.68

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Solution

The fourth proportional to 7,140.20, 10,710.72 and 2,757.68 is: 4,136.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,140.20 : 10,710.72 = 2,757.68 : x
  2. Step 2: Convert to fraction form
    7,140.20/10,710.72 = 2,757.68/x
  3. Step 3: Cross multiply
    7,140.20x = 10,710.72 × 2,757.68
  4. Step 4: Simplify right side
    7,140.20x = 29,536,738.33
  5. Step 5: Solve for x
    x = 29,536,738.33/7,140.20
  6. Step 6: Final answer
    x = 4,136.68

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1.5x scale

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.