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Finding the Fourth Proportional to 7,137.59, 10,700.21 and 2,758.12

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Solution

The fourth proportional to 7,137.59, 10,700.21 and 2,758.12 is: 4,134.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,137.59 : 10,700.21 = 2,758.12 : x
  2. Step 2: Convert to fraction form
    7,137.59/10,700.21 = 2,758.12/x
  3. Step 3: Cross multiply
    7,137.59x = 10,700.21 × 2,758.12
  4. Step 4: Simplify right side
    7,137.59x = 29,512,443.35
  5. Step 5: Solve for x
    x = 29,512,443.35/7,137.59
  6. Step 6: Final answer
    x = 4,134.79

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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.