Home / 6,171.84-8,518.38-4,287.36

Finding the Fourth Proportional to 6,171.84, 8,518.38 and 4,287.36

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Solution

The fourth proportional to 6,171.84, 8,518.38 and 4,287.36 is: 5,917.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,171.84 : 8,518.38 = 4,287.36 : x
  2. Step 2: Convert to fraction form
    6,171.84/8,518.38 = 4,287.36/x
  3. Step 3: Cross multiply
    6,171.84x = 8,518.38 × 4,287.36
  4. Step 4: Simplify right side
    6,171.84x = 36,521,361.68
  5. Step 5: Solve for x
    x = 36,521,361.68/6,171.84
  6. Step 6: Final answer
    x = 5,917.42

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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.