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Finding the Fourth Proportional to 6,434.42, 8,879.10 and 6,245.69

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Solution

The fourth proportional to 6,434.42, 8,879.10 and 6,245.69 is: 8,618.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,434.42 : 8,879.10 = 6,245.69 : x
  2. Step 2: Convert to fraction form
    6,434.42/8,879.10 = 6,245.69/x
  3. Step 3: Cross multiply
    6,434.42x = 8,879.10 × 6,245.69
  4. Step 4: Simplify right side
    6,434.42x = 55,456,106.08
  5. Step 5: Solve for x
    x = 55,456,106.08/6,434.42
  6. Step 6: Final answer
    x = 8,618.66

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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.