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Finding the Fourth Proportional to 3,370.50, 5,055.75 and 938.50

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Solution

The fourth proportional to 3,370.50, 5,055.75 and 938.50 is: 1,407.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,370.50 : 5,055.75 = 938.50 : x
  2. Step 2: Convert to fraction form
    3,370.50/5,055.75 = 938.50/x
  3. Step 3: Cross multiply
    3,370.50x = 5,055.75 × 938.50
  4. Step 4: Simplify right side
    3,370.50x = 4,744,821.38
  5. Step 5: Solve for x
    x = 4,744,821.38/3,370.50
  6. Step 6: Final answer
    x = 1,407.75

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.