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Finding the Fourth Proportional to 3,187.10, 4,780.66 and 995.64

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Solution

The fourth proportional to 3,187.10, 4,780.66 and 995.64 is: 1,493.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,187.10 : 4,780.66 = 995.64 : x
  2. Step 2: Convert to fraction form
    3,187.10/4,780.66 = 995.64/x
  3. Step 3: Cross multiply
    3,187.10x = 4,780.66 × 995.64
  4. Step 4: Simplify right side
    3,187.10x = 4,759,813.83
  5. Step 5: Solve for x
    x = 4,759,813.83/3,187.10
  6. Step 6: Final answer
    x = 1,493.46

Related Problems

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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.