Home / 7,142.23-10,711.27-2,758.69

Finding the Fourth Proportional to 7,142.23, 10,711.27 and 2,758.69

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Solution

The fourth proportional to 7,142.23, 10,711.27 and 2,758.69 is: 4,137.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,142.23 : 10,711.27 = 2,758.69 : x
  2. Step 2: Convert to fraction form
    7,142.23/10,711.27 = 2,758.69/x
  3. Step 3: Cross multiply
    7,142.23x = 10,711.27 × 2,758.69
  4. Step 4: Simplify right side
    7,142.23x = 29,549,073.44
  5. Step 5: Solve for x
    x = 29,549,073.44/7,142.23
  6. Step 6: Final answer
    x = 4,137.23

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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.