Home / 6,439.14-9,658.71-4,145.22

Finding the Fourth Proportional to 6,439.14, 9,658.71 and 4,145.22

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Solution

The fourth proportional to 6,439.14, 9,658.71 and 4,145.22 is: 6,217.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,439.14 : 9,658.71 = 4,145.22 : x
  2. Step 2: Convert to fraction form
    6,439.14/9,658.71 = 4,145.22/x
  3. Step 3: Cross multiply
    6,439.14x = 9,658.71 × 4,145.22
  4. Step 4: Simplify right side
    6,439.14x = 40,037,477.87
  5. Step 5: Solve for x
    x = 40,037,477.87/6,439.14
  6. Step 6: Final answer
    x = 6,217.83

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Half scale
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Double scale
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Similar ratio
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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.