Home / 7,140.70-10,709.99-2,757.61

Finding the Fourth Proportional to 7,140.70, 10,709.99 and 2,757.61

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Solution

The fourth proportional to 7,140.70, 10,709.99 and 2,757.61 is: 4,136.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,140.70 : 10,709.99 = 2,757.61 : x
  2. Step 2: Convert to fraction form
    7,140.70/10,709.99 = 2,757.61/x
  3. Step 3: Cross multiply
    7,140.70x = 10,709.99 × 2,757.61
  4. Step 4: Simplify right side
    7,140.70x = 29,533,908.19
  5. Step 5: Solve for x
    x = 29,533,908.19/7,140.70
  6. Step 6: Final answer
    x = 4,136.00

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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.