Home / 2,118.25-2,923.20-1,186.75

Finding the Fourth Proportional to 2,118.25, 2,923.20 and 1,186.75

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Solution

The fourth proportional to 2,118.25, 2,923.20 and 1,186.75 is: 1,637.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,118.25 : 2,923.20 = 1,186.75 : x
  2. Step 2: Convert to fraction form
    2,118.25/2,923.20 = 1,186.75/x
  3. Step 3: Cross multiply
    2,118.25x = 2,923.20 × 1,186.75
  4. Step 4: Simplify right side
    2,118.25x = 3,469,107.60
  5. Step 5: Solve for x
    x = 3,469,107.60/2,118.25
  6. Step 6: Final answer
    x = 1,637.72

Related Problems

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Half scale
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Double scale
Find fourth proportional to 2,119.25, 2,924.58 and 1,187.75
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.