Home / 8,231.75-11,346.51-6,436.05

Finding the Fourth Proportional to 8,231.75, 11,346.51 and 6,436.05

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Solution

The fourth proportional to 8,231.75, 11,346.51 and 6,436.05 is: 8,871.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,231.75 : 11,346.51 = 6,436.05 : x
  2. Step 2: Convert to fraction form
    8,231.75/11,346.51 = 6,436.05/x
  3. Step 3: Cross multiply
    8,231.75x = 11,346.51 × 6,436.05
  4. Step 4: Simplify right side
    8,231.75x = 73,026,705.69
  5. Step 5: Solve for x
    x = 73,026,705.69/8,231.75
  6. Step 6: Final answer
    x = 8,871.35

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Half scale
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Double scale
Find fourth proportional to 8,232.75, 11,347.89 and 6,437.05
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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.