Home / 3,759.32-5,186.62-2,187.12

Finding the Fourth Proportional to 3,759.32, 5,186.62 and 2,187.12

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Solution

The fourth proportional to 3,759.32, 5,186.62 and 2,187.12 is: 3,017.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,759.32 : 5,186.62 = 2,187.12 : x
  2. Step 2: Convert to fraction form
    3,759.32/5,186.62 = 2,187.12/x
  3. Step 3: Cross multiply
    3,759.32x = 5,186.62 × 2,187.12
  4. Step 4: Simplify right side
    3,759.32x = 11,343,760.33
  5. Step 5: Solve for x
    x = 11,343,760.33/3,759.32
  6. Step 6: Final answer
    x = 3,017.50

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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.