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Finding the Fourth Proportional to 6,235.79, 8,606.34 and 3,878.69

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Solution

The fourth proportional to 6,235.79, 8,606.34 and 3,878.69 is: 5,353.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,235.79 : 8,606.34 = 3,878.69 : x
  2. Step 2: Convert to fraction form
    6,235.79/8,606.34 = 3,878.69/x
  3. Step 3: Cross multiply
    6,235.79x = 8,606.34 × 3,878.69
  4. Step 4: Simplify right side
    6,235.79x = 33,381,324.89
  5. Step 5: Solve for x
    x = 33,381,324.89/6,235.79
  6. Step 6: Final answer
    x = 5,353.18

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Half scale
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Double scale
Find fourth proportional to 6,236.79, 8,607.72 and 3,879.69
Similar ratio
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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.