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Finding the Fourth Proportional to 2,661.23, 3,991.67 and 995.03

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Solution

The fourth proportional to 2,661.23, 3,991.67 and 995.03 is: 1,492.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,661.23 : 3,991.67 = 995.03 : x
  2. Step 2: Convert to fraction form
    2,661.23/3,991.67 = 995.03/x
  3. Step 3: Cross multiply
    2,661.23x = 3,991.67 × 995.03
  4. Step 4: Simplify right side
    2,661.23x = 3,971,831.40
  5. Step 5: Solve for x
    x = 3,971,831.40/2,661.23
  6. Step 6: Final answer
    x = 1,492.48

Related Problems

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.