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Finding the Fourth Proportional to 6,455.70, 9,682.20 and 2,758.05

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Solution

The fourth proportional to 6,455.70, 9,682.20 and 2,758.05 is: 4,136.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,455.70 : 9,682.20 = 2,758.05 : x
  2. Step 2: Convert to fraction form
    6,455.70/9,682.20 = 2,758.05/x
  3. Step 3: Cross multiply
    6,455.70x = 9,682.20 × 2,758.05
  4. Step 4: Simplify right side
    6,455.70x = 26,703,991.71
  5. Step 5: Solve for x
    x = 26,703,991.71/6,455.70
  6. Step 6: Final answer
    x = 4,136.50

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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.