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Finding the Fourth Proportional to 6,464.10, 8,920.17 and 3,950.42

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Solution

The fourth proportional to 6,464.10, 8,920.17 and 3,950.42 is: 5,451.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,464.10 : 8,920.17 = 3,950.42 : x
  2. Step 2: Convert to fraction form
    6,464.10/8,920.17 = 3,950.42/x
  3. Step 3: Cross multiply
    6,464.10x = 8,920.17 × 3,950.42
  4. Step 4: Simplify right side
    6,464.10x = 35,238,388.18
  5. Step 5: Solve for x
    x = 35,238,388.18/6,464.10
  6. Step 6: Final answer
    x = 5,451.40

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.